

Last checked Oct 26, 2026
Choose strap | bracelet: Black "Tropic" Rubber Strap, 3-Link Bracelet, Beads of Rice Bracelet
View on HGP Dive Watches’s site ↗The Diver GMT 200M Automatic – “Coke” – diving watch boasts a black dial with “Old Radium” Super-LumiNova® on indices and hands, a durable sapphire crystal , and a robust 316L stainless steel Monnin® case . The steel bezel, featuring a black and red aluminum insert with a hybrid 15-minute and 24-hour graduation, allows you to seamlessly blend diving and traveling. Additionally, it includes a clear and legible “Old Radium” Super-LumiNova® triangle-shaped marker at 12 o'clock. With a water resistance of 200 meters , this GMT diving watch is ready for your next underwater adventures, whether at home or abroad. This mechanical GMT diving watch – powered by the Japanese automatic movement Seiko NH34 – is presented on a black rally Tropic rubber strap or a 316L stainless steel beads-of-rice bracelet or a 3-link bracelet. SPECIFICATIONS Specifications of the Diver GMT 200M Automatic Dive Watch with Black Dial & “Old Radium” Super-LumiNova® Functions: Date / Hours / Minutes / Seconds Timing graduation: 15-minute countdown and 24-hour scale 24h time display Two time zones tracking Hands and dial: “Old Radium” Super-LumiNova® on hands and indices Bezel: 120 clicks Unidirectional rotatable “Old Radium” Super-LumiNova® triangle marker at 12 o'clock 316L stainless steel with a two-color black and red anodized aluminum insert Case: Monnin® dive watch case shape Ref. 844 – 233435 Hand-finished polished & brushed 316L stainless steel Screw-down crown Flat sapphire crystal with anti-reflective coating inside Water resistance: 20 ATM / 200 m Dimensions: 42 mm diameter × 47 mm lug-to-lug × 13.2 mm thickness 20 mm lug width Assembled in France Delivered with: Blue canvas & brown leather watch pouch HGP luggage tag featuring "Jeanne" the traveling frog and the G. MONNIN case GMT AUTOMATIC MOVEMENT The Diver GMT 200M Automatic – “Coke” – is a mechanical watch powered by the Seiko NH34 movement. Seiko NH34 Movement: Time Indication: 4 hands (24-hour, 12-hour, minute, second) & date calendar Functions: 24-hour display or second time zone Stop-second Quick date correction Power reserve: approximately 41 hours fully wound Winding: Automatic / self-winding & manual winding Finish: vertical brush Vibration frequency: 21,600 vibrations per hour (3 Hz) Jewels: 24 pcs In-house operations: Control and setting with a tolerance of ±15 s per day and a beat error of 0.6 ms RALLY "TROPIC" RUBBER STRAP, BEADS-OF-RICE BRACELET or 3-LINK BRACELET This Diver GMT 200M Automatic – “Coke” is delivered with a black Rally Tropic Tropic Rubber Strap or a 3-link bracelet or a 316L stainless steel beads-of-rice bracelet : SPECIFICATIONS OF THE RUBBER "TROPIC" STRAP Dimension & Size: Long part length: 120 mm Short part length: 75 mm Lug width: 20 mm Buckle width: 16 mm Spring-bars: "Fat" 2 mm ⌀ Material: NBR Rubber Strap Oil Resistant – won't be damaged by lubricant or sunscreen Water-Resistant – ocean ready 316L Stainless Steel Buckle Color: Black Delivered with 3 loops: Two skinny loops of 6 mm One large loop of 12 mm SPECIFICATIONS OF THE STEEL BRACELETS Full brushed finish 316L stainless steel Machine milled and hand-brushed links Quick-release spring-bars – fast strap and bracelet change Solid deployant clasp: Double pusher lock – easy to operate while safe from accidental openings 5 micro-adjustment positions
Details and photos come from HGP Dive Watches’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
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42 mm · 200 m · Seiko NH35

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