• Today is: Tuesday, May 22, 2018

SNEAK PEEK: First 60th anniversary Omega Speedmasters revealed

Omega Speedmaster Ladies
wristwatch
May21/ 2018

Here is where things get even more perplexing. While an Omega continues to be in space today, we are not yet at the point where NASA has flight-qualified anything. However, we do start to find the watch get a little beefier with bigger pushers, and now thin white hour and second hands that the Speedmaster would retain in perpetuity.With mention 105.012 we actually see the Speedmaster start to evolve and take the shape of what we understand — and can be still made — today. For the very first time we’ve got crown guards — in fact we’ve got an entirely new, bigger mid-case. The pushers are wider, and entirely protected by the new case design. On the dial we have “Professional” written below “Omega Speedmaster.” Again, we have to recall that Omega made these watches in the very same time as other references including symmetrical instances and “Pre-Professional” dials. There’s no linear transition with Speedmasters, and one must remember that when trying to date an illustration. Together with 105.012, we now also have a 42mm case.Omega is among the best-known luxury watch brands on the planet, and certainly the best known off the planet. From NASA to the Olympics to James Bond, and of course titles like Speedmaster, Seamaster and Constellation, the newest has attained well-deserved rock-star status among watch fans everywhere. Here are 10 things you ought to know about Omega. “Chronograph” is only a fancy term for “stopwatch.” They have been inserted to watches back in the first portion of the 20th century to permit racecar drivers and pilots to time themselves, and also each other.

It is a huge year for Speedmaster, Omega’s iconic sports watch, which is celebrating its 60th anniversary in 2017.

Two models have been revealed ahead of Baselworld, but expect to see a raft of models in a top to bottom celebration of the icon.

What we have seen so far is a 38mm ladies model with cappuccino colours and a diamond-studded bezel, and a 44.25mm driver’s model in black, silver and orange.

Omega Speedmaster Ladies

The ladies 38mm edition has a two colour dial with brown oval subdials on a latte-coloured face. The case, hands and indexes have all been made from 18ct rose gold.  The watch houses an Omega Calibre 3330, which uses a silicon balance spring.

The men’s stainless steel Speedmaster Automatic is a classic driver’s watch with a matt black dial with hands and markers featuring 18ct white gold, white Supernova-Luminova and orange. It is carried by a black leather strap that is perforated to reveal orange rubber below. The watch houses a chronograph-certified caliber 99000.

Omega Speedmaster men

Changing faces of the Omega Speedmaster

ONE - 1957_-_Broad_Arrow
wristwatch
May21/ 2018

The difference between those eight sub-references could be minimum, so we’ll do the best we can to break them down for you.The first 2998, 2998-1, could be virtually identical to some of those 2915-3’s made in the very same season — 1959. We now see, universally, the “foundation 1000” script on a black bezel. Gone will be the broad arrow and minute hands, and in their place are alpha hands. Everything you might see in the 2998-1, however, is is the squat, oval-like “O” in Omega, though that’s not crucial for the 2998-1. The sub-register hands stay “alpha” formed in the 2998-1. In reference 2998-2 we keep the Base 1000 bezel, the alpha hands for the two hours and minutes and sub-registers, but no longer should we see that an oval shaped “O.” The hands and dial stay the same for its reference 2998-3, only we lose the “Base 1000” bezel to be substituted by a “Tachym��tre 500” bezel.By 2998-5, we absolutely see stick sub-register hands, a “Base 500” bezel, a round “O” in Omega on the dial. We retain the crown-guard-less symmetrical case, also applied Omega symbol, and the watch remains relatively static for reference 2998-6, -61, and 62 — the latter two sub-references suggesting year of production.The 2998, with its own black bezel and alpha palms, set the stage for its Speedmaster that we know now. Additionally, it is with this reference the connection to space begins to take shape. Astronaut Wally Schirra made his historic voyage aboard the Mercury Atlas 8 mission in October of 1962 wearing a reference 2998.

WatchPro looks at the significant and obscure Speedmasters that Omega has launched over the past 60 years.

The 1957 Speedmaster Broad Arrow was one of three Omega debuts that year (the Railmaster and the Seamaster 300 were the other two). All three watches were high-precision timepieces designed for professional assignments and offered similar performance and aesthetic features with black dials, very robust cases and stainless steel bracelets.

ONE - 1957_-_Broad_Arrow

The 1959 Speedmaster ref. CK 2998 was the first Omega to reach space, when astronaut Walter Schirra wore the watch during the ‘Sigma 7’ mission of the Mercury Programme in 1962. Schirra had purchased the watch for his own use, but two and a half years later, the Speedmaster would be officially certified by NASA for all manned-missions, launching it into history.

TWO - 1959_-_First_Omega_in_space

For well over half a century, the Omega Speedmaster has witnessed events that have tested the limits of physical endurance and human courage, including the first manned lunar landing in July of 1969 and every one of NASA’s piloted missions since March of 1965. This is the watch that is commonly known as the Moon Watch.

THREE - 1965_-_The_Moonwatch

Omega made a very limited number of stainless steel split chronograph prototypes as part of its Alaska IV project. These digital wristwatches with day, date and month, made for the NASA Shuttle were signed Omega, Speedmaster, Professional, Quartz, Alaska IV Model.

FOUR - 1979_-_Alaska_IV

Omega celebrated the 50th anniversary of the caliber 321 movement in 1992 with a gold commemorative model limited to 999 units with a caliber 863 movement and an additional 250 units housing the caliber 864 chronometer version of the same movement.

FIVE - 1992_-_Jubilee

Omega made its first watch for the original NASA Apollo Soyuz mission in 1975, and marked anniversary years of the mission several times, including this 2010 model made 35 years after the first American/Russian project.

SIX - 2010_-_Apollo_Soyuz

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men’s Watch RGA3019

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men's Watch RGA3019
wristwatch
May18/ 2018

The Reef Tiger Aurora pilot Watches series is the most soldierly watch in Reef Tiger watches. In order to further design the possibility of the aurora “pilot” series, Reef Tiger has made a type of wrist watch with retro style and excellent functions. The new Aurora pilot series wrist watch has adopted the most characteristic of “onion” big crown and large size of the case and the plane panel sample. The latest pushed out Aurora pilot series wrist watch, as fly high imagination for inspiration. Operating dial with luminous. Mechanical quality shows the urgency in the sky and the pilots’ capability and great skill.

Sapphire glass, sapphire watch ring

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men's Watch RGA3019

9.1 mm thick sapphire glass is anticorrosive, scratch-resistant and never wear, let art always clear. Super luminous’ amplification effect in the small space between dial shows hazy blurred, unique visual feeling like to burst through the mirror.

The dial

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men's Watch RGA3019

The dial is marked with a nail-light screen and is equipped with a SLN C1 Super Luminova super luminous material pointer, with multi-faceted design and SLN C1 SuperLuminova super luminous material.

Ergonomic case

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men's Watch RGA3019

The 45mm wristwatch is round and smooth, with a crown of teeth, and a strong case with curved lug, fit wrist well. It is very comfortable and personality. The taste of its ancient ways, military appearance of the sense of sight, makes a lot of men drool, like poison, let tough guy can’t refuse it.

Crazy horse leather strap

Detailed Review With The Aurora Pilot Blue Dial Blue Leather Rose Gold Case Automatic Men's Watch RGA3019

Oily frosted leather strap, with rubber lining protection of special lines with the passage of time will become better quality; add some retro color to the contemporary Pilots watch. The lining of the imported Italian calf leather with same color cotton handmade, bring good wearing feeling with soft and breathable.

Precise movement

It is well known that movement is the heart of the watch, the stability of the movement or not directly related to the life of watch wearing. Reef Tiger from watch factory innovation excellent movement CAL. 8810 movement, 24 jewels, and 21600bpm to ensure the direction error rate is less than 10 seconds. It is the core of Reef Tiger best watchmaking process.

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238
wristwatch
May11/ 2018

This is the power of a wristwatch, gentlemen He has poise,classic style and a posture that grabs everyone’s attention.He casually turns his wrist to check the time.

Most men prefer to own more than one watch so they can wear the appropriate timepiece to complement their outfit.

How to match this Classic Heritor watch? Give you a reference:

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238

Inheritance is the continuation of human beings, how to express the meaning of your inheritance, how to solidify the classic in time, the designer of Reef Tiger has pushed out the classic inheritance series wristwatch. In honor of the timeless classic, only the simplest time display function, symbolizing pure and precious. The week calendar functions at 3:00, minimally but without loss of utility Reef Tiger classic Heritor watch, your honor and legacy of the best interpretation.

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238

The case

The case is designed with a four-piece set, which is the ring, inner circle, the main body and the case back. So many accessories are assembled with only 11mm, which is only realized by Reef Tiger professional best watchmaking technology.

The dial

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238

In this 8 mm to assembling watchcase, dial, pointers and glass, is different from the ordinary watch dial’s flat structure. Retro style watch dial is adopted bending processing, with mold cavity, and then stamping with machinery.

The glass

Similarly, in order to achieve the ultra-thin effect, the retro series adopts the arched sapphire mirror, which costs 2-3 times as much as the normal sapphire, and the anti-reflection AR film is plated to increase its permeability.

Movement

The retro series is based on the Reef Tiger original factory movement CAL.3900, which ensures the precise and reliable time. And the life of ordinary machine is shorter, also often inaccurate.

Watch button

In order to fit retro style lovers watches’ classic theme, we adopted simple double click butterfly clasp. But even a simple double click butterfly clasp, we cut surface also reached 24 surface, carefully polished every surface, angle, even the pins link the buckle are adopted advanced 1.8 mm stainless steel pins, make sure the clasp of strong and durable.

A Genuine Gift for the Watch Enthusiast:Reef Tiger Classic Heritor Collection RGA8238

Strap

Different from the luxurious presented by the crocodile leather strap, the alligator leather strap conveys a delicate and unique fashion attitude. Use Italian imported crocodile skin as the raw material, soft feeling, perfect cut, neat hand sewing thread must bring you perfect wear feeling.

 

Discover The Classic Heritage II A Gentleman’s Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232
wristwatch
May07/ 2018

Handed down from ancient times series show the time and date in the simply way, and expressed the respect to tradition. On the basis of Reef Tiger Classic Watch, and the combination of fashion, make it have the design and application of new feeling.It is a perfect inheritance from reeftiger hundreded watchmaker .This watch of wrist of the second generation handed down from ancient times between single and not easy ,though it is design by simply low-key ,its ergonomic curve il ,religious stone, yellow coating and stainless steel reach to perfect combination. The design convey the inside collect ,the pursuit of elegant image of the product.

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

Round rose gold case, Swiss Reef Tiger RT4101 Automatic Movement, 26 jewels, provides 42 hours of power reserve, date, sapphire crystal. stainless steel case with rose gold bezel (42mm diameter). blue dial with stick/diamond markers. blue leather strap with deployment buckle. waterproof to 50 metres.

Delicate watchcase

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

Watchcase process reflect the polishing. Though the same material and shape, different polishing reflect different levels. It is a good watch that has clear sand bit and bit line and bright polishing.

L watch ear

Watch ear use L to match up round watch body. It connect the watch ear and the belt with screw.

Sapphire watch glass

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

The watch covered by sapphire watch glass, adapt double sapphire watch glass, and electroplating three microns anti-reflective. It increase the smooth of watch surface and make the literal fully.

Durable movement

Discover The Classic Heritage II A Gentleman's Watch Inspired And Created With Classicism, Elegance, And Excellence RGA8232

As we know, movement like the heart of people, this watch’ screen direction error rate is no more than five seconds, It is also a automatic match. So its life is up to sixty years.

Electric platinum word nail

Generally speaking, platinum is used for make jewelry. This watch ’word nail covered by platinum. It is bright and bring the unique feeling.

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703
wristwatch
May03/ 2018

Reef Tiger integrate personality and charm into the creation. The first time launched Reef Tiger Aurora Air Bubble watches. The large size of watch case (φ44mm), convex bubble-like sapphire crystal lens and zoomable distorted visual effect dial, bring you a different watch wearing experience.

The latest Bigbang wrist watch inspired by the chaos of the birth of universe, using gears, lightning, machine elements to express the feeling of life in prehistoric period.

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703

Illusion visual art lens:

Illusion visual art is a visual effect which uses of people’s illusion, make the static pattern acting like dynamic. Reef Tiger capture such elements to put the fantasy 3D visual effect into the small dial. The unique visual dynamic effect acting like to it will go out the lens.

Mechanical texture dial:

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703

The designer designed the Bigbang watch dial like the celestial nebula in prehistoric world. The hollow grooved and lighting effects ably matched, the implication of the explosion and vitality perfectly in coordinate with the name of Bigbang.

Ergonomics Case

The 45mm watch case smooth and streamline, and the ball-shape crown inlay with a rubber ring. The heavy watch case match of the refine curved lugs, so close to the wrist, comfortable to wear, yet express individuality.

Crazy horse strap

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703

With passage of time, the special lines of crazy horse strap will become rich texture, adding a bit of retro color to the Air Bubble series watches. Imported Italian calfskin supplemented with same color cotton thread, soft and breathable, bringing the best wearing feeling.

Precision chronograph movement

Let Us Review The Reef Tiger Aurora Air Bubble Black Leather Steel Mens Auto Watch RGA703

The core technology of this watch is its RT6500 tourbillon movement. The tourbillon is completely show in our eyes. Its exquisite movement is so compelling and amazing.

As the gossamer of the escapement will be affected by the tightness or metal fatigue, and the balance wheel also affected by gravity, ordinary mechanical watches have big error. But the tourbillon movement speeder has play a significant role in overcoming such kind of affects..

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532
wristwatch
May02/ 2018

The Reef Tiger Aurora Transformer watch, in addition to following the idea of the frontier artist’s works, its functional design also inherited his creative spirit. It is common in the fashion world to make a classic combination of the futuristic Transformer with wristwatch. The launch of Aurora Transformer wristwatch is not only an exploration for the future, but also embodies Reef Tiger’s spirit of exploration and innovation. The new Reef Tiger wristwatch is equipped with anchor escapement system, nonperiodic escapement system and mercury compensate-type pendulum.

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

Imported 316L stainless steel case

The case of Transformer watch is used pure imported 316L stainless steel. And the part linked to the crown and the chronograph buttons are adopted the brushed stainless steel. The curved button on the left is in accordance with the overall style design of the watch. Personality and fashion is distinct.

Complicated designs for dial

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

There are two sub-dial top and bottom on the watch dial. The tourbillion at 6:00 and the calendar for years and months at 12:00 represent time will still be the theme of perpetual however the future will be. The left sub-dial is for day function and the right one is for date function. The engraving of dial and the use of shading that the designer made reflects the conjecture of future. It is full of sense of science and technology.

Sport rubber strap

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

An exploratory Transformer wristwatch with a rubber band is much better. The designer uses the gradient process for the Transformer rubber band. It is narrowing from the case junction so as to make the big watch in 48mm look slender.

Super Luminous time scale design

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

Transformer wristwatch uses super luminous heteromorphy as the time scale. Four polygonal time scales on the dial show the fashion from its subtleties.

Two-colored splicing hands

Aurora Transformer watch use skeleton splicing design; its basic color is light black and it is filled with super luminous. The joint part is used high saturated red, yellow, blue, etc, which corresponds with the color of minute countdown sub-dial, is distinctive characters.

Case back

A Charming Watch On Your Wrist Reef Tiger Aurora Transformer Complicated Watches RGA3532

The watch case back is transparent design with skeleton movement and flywheel, which we could get a sweeping view of the movement mechanism. The mechanical sensitivity, technology sensitivity and the sense of the future is shown undoubted.

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782
wristwatch
April28/ 2018

Reef Tiger integrate personality and charm into the creation. The first time launched Aurora Dragon series watches. The large size of watch case (45 mm), convex bubble-like sapphire crystal lens and zoomable distorted visual effect dial, bring you a different watch wearing experience. The latest Aurora Dragon wrist watch inspired by the chaos of the birth of universe, using gears, lightning, machine elements to express the feeling of life in prehistoric period.

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782

New Reef Tiger Aurora Dragon Watch for Men, Reef Tiger RT685 Quartz Movement scratch-proof sapphire crystal glass. Solid stainless steel 316L case plated with rose gold (45mm diameter). The latest Aurora Dragon big bang watch, inspired by the mythical creature Dragon, uses mysterious, atmospheric and mythical textures to show the expansion and multiplication of life in ancient times. Waterproof to 50 meters.

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782

THE CASE

Aurora Dragon Rose Gold Watch. The durable, stainless steel plated with rose gold, fixed bezel also fitted with create professional looking proposals and presentations. Durable poly front and back covers with coordinated.

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782
THE DIAL

Black dial with three subdials. The Date between at 4 o’clock and 5 o’clock.

Reef Tiger Aurora Dragon With Morden And Coolest Styles RGA782
THE MOVEMENT

Reef Tiger RT685 Quartz Movement
THE STRAP

Soft and comfortable calfskin strap with with Deployment Buckle.
WATER RESISTANCE

This watch is water-resistant to 50 meters

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653
wristwatch
April26/ 2018

Description
Reef Tiger Seattle Philosopher Watch for Men, Reef Tiger RT7600 Automatic Movement, mineral crystal glass.Solid stainless steel 316L plated with rose gold case (40mm diameter). Black dial with rose gold stick markers with bright night luminescent “Superluminova” on hands and indexes underneath the mineral crystal glass and for the 24 hours indicator. Hour and minute, 6 o’clock moon phase ,day and date display.Black leather strap with deployment buckle with double buttons.

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653
Pass through the tide of time, in search of the meaning of life, Reef Tiger never stop explore the professional watchmaking spirit. In the course of history, every new product release, Reef Tiger constantly using modern spirit to interpretation the classic of time. Today, the new launched Seattle Philosopher watch use its gracious and elegant designed with automatic movement to continue the classic of time.

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

The Seattle Philosopher Watch boasts Germany imported 316L stainless steel case, the polished rose gold bezel gently embraces a black dial. It includes rose gold markers, Moon phase located at 6 o’clock position day lie in 9:00 and date display at 3:00. The watch fitted with removable genuine leather strap. Beating at the heart of this watch is a Reef Tiger 7600 automatic movement.

THE CASE

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

Seattle Philosopher Men’s Watch. The durable, stainless steel, rose gold bezel also fitted with create professional looking proposals and presentations. Durable poly front and back covers with coordinated.
THE DIAL

Black dial with rose gold-tone stick markers. Hours, minutes, seconds, day, date and Moon Phase display. This Luxury watch has its logo on the dial at 3 o’clock.
THE MOVEMENT

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

Reef Tiger RT7600 Automatic Movement
THE STRAP

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

Modern Style With Classic Appeal Seattle Philosopher Black Dial Rose Gold Case Automatic Watch RGA1653

Black Leather Strap with Deployment Buckle with Double Button.
WATER RESISTANCE

This watch is water-resistant to 50 meters

A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163

A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163
wristwatch
April23/ 2018

The City Impression is the foundation of Reef Tiger’s line of traditional dress watches, embodying what a straightforward dress watch can be. Yellow gold case with a black leather strap. Fixed hobnail pattern bezel. Champagne dial with black-tone hands and Roman numeral hour markers. Round case shape. Reef Tiger offers a great range of men’s watches from fashion to classic and technical timepieces styled in the most up-to-date designs.
A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163

Description
Reef Tiger Seattle City Impression Watch Champagne Dial Yellow Gold Watch, Reef Tiger RT7101 Automatic Movement, scratch-proof sapphire crystal glass. round yellow gold case (39mm diameter) with Hobnail-patterned bezel. champagne dial with black Roman numerals markers.black genuine calfskin leather strap with deployment buckle. waterproof to 30 metres / 100 feet.

Classic rounded case

A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163

People who appreciate the classic and elegance will be impressed by Seattle City Impression, the classic rounded case, which is in 39mm, could firmly grasp people’s attention.

Exquisite polished dial, Different hour markers choice

In order t show the lwo-key and luxurious charm of City Impression, deep black and shinning white diamonds form sharp contrast, while the white enamel dial is moist like jade.

In order to offer customers more options, City Impression has two different hour markers, Rome hour markers are generous and elegant, while diamond markers are dazzling.

A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163

Hobnail bezel, Dauphine hands

Different from the monotonous smooth bezel on general watches, City Impression adopts hobnail bezel, unique design shows the distinctive elegance of the whole watch.

Dauphine hands are slender and elegant, black pvd plated and stainless steel hands match the dial in different color separately. There is also yellow hands on golden watches, looks dazzling.

Transparent case back

A Complete Guidebook On Reef Tiger Seattle City Impression Watch RGA163

As a business mechanical watch, the movement is the soul of the whole watch. City Impression adopts transparent case back, so the operation of each movement part is shown in front of your eyes, to let your witness the passage of time.