Updated: Jan 28

SHORT BRAND HISTORY. IWC is one of the oldest watch company with aviation and military heritage, which obviously drive people crazy about it, even there is a real chase for it. Starting in 1868, a qualified Swiss watchmakers named Florentine Ariosto Jones, who was American, founded International Watch Company in Schaffhausen, which in short is what we refer as IWC nowadays.

International Watch Co. Headquarters. Photo: Google.

Among all watch productions, IWC is certainly one of the most earth-concious company, by uses only 100% renewable energy since the start, recycles waste heat and rainwater. Hat down for starting it early even before Greenhouse effect is booming.

First things first, Pilot watch, as it is labelled, from IWC engineered for aviators.

I always wonder why this particular model of Big Pilot series called Transitional Dial? It is the old movement, encased in a new diameter of 46mm, with first ever Probus Scafusia onion-like shape crown. Having said that, this IWC 5002 is indeed the 1st generation of Big Pilot, while adopted the vintage yet modernized military look. This IWC model has B-Uhren inspired models (photos: B-uhren models), 1940’s pilot watch model, judging from the slightly thick but still comfortable to the wearer, housed Anti Magnetic Shielding.

Onion shaped crown that is ergonomically comfortable for wearer to adjust time and date without needing to ‘dig’ it, and scratch the case with your nails, well thought of indeed.

Black charcoal-like surface dial make it easier to read the time and date in almost all kind of situation, day or night.

The signature Triangle logo.

Calibre 5011 Movement.

For sure you would like to know whether this watch is Collectable? I can surely says that this watch is extremely collectable, due to its low production number, short production year, military elegancy look, while embracing the historical movement in a modern case.

Watch Description:

Case | Stainless Steel, Brushed Finish

Movement | Calibre 5011, 18.800VPH Pocket Watch Movement

Power Reserve | 7 Day / 168H Accuracy

Water Resistant | 60M

Glass | Sapphire

Strap | Brown Leather Strap

Diameters | 46.2 MM

Thickness | 15 MM

Lug width | 22 MM

Year Of Production | 2002

#WatchTheTalk #Watchboutiqueid #Watchboutique #Watchboutiqueindonesia #WatchReview #InternationalWatchCompany #IWC #IWCwatch #IW5002 #Transitionaldial #Vintagewatch #Luxurywatch #WatchBlog

On Today’s blog, we will write about one of the most popular Rolex model, which is the GMT-Master. The Rolex GMT Master has always been a popular watch since its debut in 1954. Many people nowadays called it Rolex Pepsi. Whenever people talked about Rolex Pepsi, the watch they are referring to is the Rolex GMT Master.

What is a Rolex Pepsi?

The first ever Rolex GMT-MASTER watch uses two colors for its bezel; blue and red. The red color denotes the day time, and the blue denotes the night time. The first Rolex GMT-Master bezel uses the bakelite material. A more familiar term which explains bakelite is plastic; it is the world’s first synthetic plastic. This combination of colors closely resemble the popular drink Pepsi, and thus it is famously called “Pepsi”.

Aviation watch

The Rolex GMT Master was initially developed in cooperation with Pan Am, who is one of the largest airline company at the time. In the 1940s and 50s, flying distances got longer and thus pilots travelled through multiple time zones. The pilots and the flight attendants faced a new problem, the jet-lag. Many studies showed that one way to fight the confusion caused by jet-lag was to have an instrument that could simultaneously display the home-time and the destination-time. Pan Am asked Rolex to develop a watch which could tell different times simultaneously.

The challenge Rolex face was to create a movement that is able to display 2 different time zones. The indication of the second time zone was achieved by an auxiliary hand with arrow-end and red-painted body, that rotates in 24 hours. To read the second time zone, it was necessary to rotate the bezel on the desired hour.

First Rolex GMT-MASTER - 6542

The first Rolex GMT-Master was introduced around 1954. It is first released with reference number 6542, and the movement could indicate the exact time simultaneously in 2 different time zones. With a 38 mm diameter, it was originally manufactured with a blue and red bakelite bezel, which is later replaced with a blue and red metal bezel.


In 1959, the GMT-Master with reference number 1675 is produced. Rolex modified the case diameter to a larger 40 millimeters. With the larger diameter, it becomes easier for the wearer to read the time. Additionally, Rolex added crown guards on the case to protect the crown from getting damage.

The GMT-Master 1675 was first produced with glossy gilt dial. However in the late 1960s, the dial was changed to a matte dial.

This watch is in production for 20 years, so the dials has changed many times, resulting in many different markings version of the dial.

This model is also available in 18 ct gold, also super popular until today among watch collectors. In 1971, Rolex creates the GMT-Master in stainless steel and yellow gold with reference number 1675. It is offered with either an Oyster bracelet or with a Jubilee bracelet, both in Rolesor, which means a combination of stainless steel and gold.


In 1979, Rolex launches the GMT-MASTER in stainless steel with reference number 16750. This watch comes with the quick date change feature. This updated feature helps a lot with changing the date, because before, we need to turn the crown for two full rotations to change the date. The watch is updated with two lock position at the crown. Now, we can easily set the date.

This release also added a new black color bezel to match with the black dial. For people who wanted a monochrom watch, they could opt for the black dial & black bezel GMT-Master. This watch is extremely rare.

Rolex also released the steel & gold model with reference number 16753, and the 18 ct gold model with reference number 16758.

One quick note is this model will be the final GMT-Master with acrylic crystal.


Rolex introduced us to the concept of an independent hour hand for a GMT-Master in 1983 with the release of a GMT-Master reference number 16760 which allows the wearer to know the time in 3 different time zones. Also known as the “Fat Lady”, it is po wered by a different type of movement, the 3085 movement.

With previous generations of the GMT-MASTER, the two hour hands were linked directly to each other, meaning they couldn’t be set separately. This new movement allowed the center hour hand to be set independently from the arrow-tipped 24-hour hand.

This watch also marks the shift of using sapphire crystal in replacement of the use of acrylic crystal. The sapphire crystal makes the GMT-MASTER scratch resistant. The iconic Cyclops at 3 o’clock remained to magnify the date window.

16700 & 16710

Completing the transition from GMT-MASTER to GMT-MASTER II, Rolex released 2 models in 1989: one for GMT-MASTER, and the other for GMT-MASTER II.

Both models feature a black color matte dial, with the use of 18k white gold around the luminous hour-markers. This was done to prevent tarnishing on the dial so that the dial can be preserved for as long as possible.

The bezels came in three diversity: Black, Black & Red, and Blue & Red. The two colored dial has been the hallmark of the GMT-MASTER since its introduction as they illustrate the day apart from the night. This was also the first time Rolex adopt the black and red color combination on the bi-directional bezel, and it quickly gained the nickname “Coke”, perfectly integrating itself with the other “soft-drink” bezels like “Pepsi” and “Root Beer”.

The final model for GMT-MASTER, bears the reference number 16700. The watch comes in stainless steel case, and for the bracelet, a buyer can choose to have either an oyster or jubilee bracelet. Offered at a lower cost alternative at that period, it looks nearly identical to the GMT-Master 16710. However, it resembles the original concept of GMT-MASTER. It comes with black bezel or the blue & red “pepsi” bezel.

We may encounter this watch with a “Coke” bezel. This bezel is obtainable from its cousin, the GMT-Master II 16710, who share the same bezel.

Meanwhile, the GMT-MASTER II came out with a full collection of the different materials. stainless steel watches (with reference number 16710), also Rolesor yellow gold and steel watches (with reference number 16713) and the full gold watches (with reference number 16718). They may also bear the reference number 16710T, 16713T and 16718T respectively. T stands for the French Trou (hole), which means it has a blind hole and the springbar cannot pierce through the holes.

The stainless steel 16710 comes with 3 different bezel colors: All Black, Blue & Red (Pepsi), or Black & Red (Coke).

The gold and steel combination watch 16713 comes with 2 different bezel colors: Black whose dial is also black, or Gold and Bronze bezel whose dial is brown. The Gold and Bronze version would famously be known as the “Root Beer”.

This is the final GMT-Master watches with Aluminium bezels. Rolex will change the material of the bezel insert to ceramic. When people talk about vintage Rolex Pepsi, the watches that we seen are considered vintage nowadays. The vintage watches are light and easy to wear on the hands, so it makes them very popular nowadays.

We have come to the end of our blog. Hopefully, you enjoy today's blog.

Updated: Jul 16

Before we make this blog, we ran through our customers’ feedbacks and also the top-asked questions by our customers. Going through a Covid-19 Work-From-Home situation, we knew that most of our customers are staying at home, and therefore we feel that now is the perfect time to make a blog.

I believe that it can be a lot of fun to play with our watch while we stay at home.

Lets discuss the Rolex GMT-MASTER watch. Many of our customers own few different pieces of Rolex GMT-MASTER watches. One of our customers has a beautiful collection of GMT-MASTER watches, from the historical GMT-MASTER watch with Acrylic crystal to the latest GMT-MASTER II watch with Cerachrom bezel. One of the top-asked questions by our customers is: “how to set my GMT-MASTER watch?”

To set our GMT-MASTER watch, the key is to see if the watch we are setting is GMT-MASTER or GMT-MASTER II watch. Then setting the watch will be pretty straight-forward.

Some of us have both the GMT-MASTER & GMT-MASTER II watch, so sometimes we get a bit confused when we set the watch. Moreover in 1989, Rolex has released the respective two models at the same time. One is a GMT-MASTER II watch with reference number 16710, and the other is a GMT-MASTER watch with reference number 16700.

They are very similar watches.

The quickest way to differentiate is to take a close look at the dial of the Rolex GMT-MASTER watch. If we see the writing “GMT-MASTER II”, then we are setting the watch with the newer movement, and the writing “GMT-MASTER” indicates an older movement.

It is to be noted that in 1989, both of this movements are made available to watch buyers. During this time, the GMT-MASTER watch (16700) is offered as a more cost-effective watch. The GMT-MASTER II watch utilize a more modern movement, with independent hour hand, whose concept is still being used until today.

When setting a GMT-MASTER watch, we set the hour hand together with the 24-Hour GMT hand. In this video, our GMT hand will denote our home time, and the hour hand shall denote the current time wherever we are.

In the case of Rolex GMT-MASTER 16700, We will first unscrew the crown, and pull the crown to the first position to set the date.

To set the hours and minutes, we pull the crown to the second position, which is the maximum position the crown can be pulled. And then we turn the crown clockwise direction to move forward the GMT hand, the hour hand and the minute hand. Both the GMT and hour hands should move at the same rate when we turn the crown. Two full rotations of the hour hand is equal to one rotation of the GMT hand.

After we finish, the bezel can then be turned to denote the home time.

In this case, we set the date to the 8th and both the GMT (home) time to 8:20 pm and current time to 8:20 pm.

When setting a GMT-MASTER II watch referenced 16710, we pull the crown to the first position to set the independent hour hand to set the date. The hour hand moves two full rotations to increment the date.

To set the GMT hand and minute hand, we need to pull the crown to the outmost position, or the second position. All three hands will move at the same time, but we will focus on the GMT hand and the minute hand.

And finally we move the crown back to its first position to set the hour hand against the current time.

GMT-MASTER II Third time

The Rolex GMT-MASTER II can denote a third time zone.

Although it can be used to display a third time zone, only two different times can be read at one moment.

If we want to read the time, which is two hour ahead of our home time, we could rotate the bidirectional bezel two hours ahead and the time that we want to read will be indicated by the numeral on the bezel that the GMT hand points to.

For example, if a person who lives in Jakarta is currently in Makassar visiting his family, he can read the current time in Makassar on the dial as normal (from the hour and minute hands), while the GMT hand shows him the time back home in Jakarta against the 24-hour scale on the bezel.

If he wants to read the time in Jayapura, which is two hour ahead of his home time in Jakarta, he could rotate the bidirectional bezel two hours ahead and the time in Jayapura will be indicated by the numeral that the GMT hand points to on the bezel.

Take note that since the bezel has been rotated, the GMT hand no longer displays the Home time that it shows previously. So while the watch cannot show all three times at once, it is a rather quick and easy task to switch it to reference a third time.

The new improvement to the Cerachrom bezel is the ability for it to move in one hour increment, and thus is easier to turn it with precise. It helps us to quickly and accurately read the third time.


It seemed most effective if you set the GMT hand to be your home time. And when you travel, you can set the hour hand to be the current location time. The reason is that when the hour hand is set, it moves one hour ahead or behind, so we would not mess up the minute. In addition to that, the second hand will also continue running, therefore we will not mess up the time.

It is however totally up to you, because this boils down to personal preference. You should wear your watch however you like it.

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