All four watches are powered by the GMT Caliber 6R64, which beats at 8 vibrations per second. The GMT hand is a different color on each model to make it stand out clearly from the dial, and is coated with a thick layer of LumiBrite for optimal legibility, as are the other hands and indices. The GMT hand can also be used to display two time zones, and when the hour hand is adjusted, the minute and second hands continue to display the current time. The bezel of the models is two-tone to make it possible to distinguish night and day times at a glance. The date is displayed on a sub-dial at the 6 o’clock position, and there is a power reserve indicator at the 9 o’clock position.
The dial color of the exclusive Seiko Boutique model is Hihada-iro, a reddish brown that was originally obtained from the bark of the Japanese cypress.
With its sharp and angular silhouette, the case is light and comfortable to wear. The slim, carefully polished case surfaces and bracelet provide a modern look.
The watches are all powered by the 24-jewel 6R35 caliber, which offers a power reserve of 70 hours. The watch glass is made of sapphire crystal, and the case back, also made of sapphire crystal, reveals the delicate craftsmanship of the movement.





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