The deceptively simple dial of the Hydroscaph GMT Power-Reserve Chronometer in fact reflects extremely accomplished stylistic research. The precision and the optimal legibility of the indications, combined with the complex case construction, add to the strength of this iconic model. The individually crafted 3D numerals and hour-markers are bevelled to facilitate the sweep of the hours hand. Their subtly trapeze-shaped lines proclaim an authoritative style and ensure perfect read-off from any angle. In a reference to marine depths, the dual-time display stands out clearly on an oversized mother-of-pearl counter. Whether on dry land or at the bottom of the sea, the readability of this 3D face remains optimal thanks to a Superluminova coating applied to the hour-markers and the hands with their post-industrial look.

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Building on its inimitable design, the Hydroscaph GMT Power-Reserve Chronometer comes with a case in a choice of high-density polished steel, solid steel with black Diamond Like Carbon treatment – an extremely hard and scratch-resistant coating – or in 18K red gold and black DLC-coated steel. Several dial variations – white, midnight blue, chocolate brown or black – provide a wide array of alternative faces. A vulcanised rubber or alligator-finish rubber strap secured by a folding clasp complete with safety pushers lends an ultimate touch of refinement to the Hydroscaph GMT Power-Reserve Chronometer. Seamlessly integrated with the case, it acts as an extension of the Hydroscaph collection’s signature mobile lugs, designed to ensure a perfect fit on the wrist even over a diving suit.

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Technical specifications

Movement Mechanical self-winding, exclusive C610 calibre 31 jewels, 28,800 bph, 42-hour power reserve
Functions Hours, minutes, central seconds, date, power-reserve indicator and 24-hour dual-time display
Case Black DLC-coated high-density steel or 18K red gold and black DLC-coated high-density steel 43.8 or 48 mm with lateral reinforcements
Crown activating and locking the rotating bezel
Glareproofed sapphire crystal on both sides, dual-porthole exhibition case-back
Automatic helium release valve 83 components
Water-resistant to 800 m (80 ATM/2,624 ft)
Dial White, brown, midnight blue or black Central hours, minutes and seconds hands
Date aperture at 3 o’clock
Power-reserve indicator at 12 o’clock 24-hour dual-time display at 6 o’clock
Strap Vulcanised rubber or alligator-finish rubber with folding clasp

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