The DOXA SUB 250T GMT Sharkhunter Ref. 3505808 is a robust and highly capable professional diver’s GMT watch, marking the brand’s highly anticipated return to dual-time functionality after nearly two decades . Housed in a 40mm stainless steel case, it balances significant wrist presence with comfortable wearability, featuring a thickness of 10.85mm and a lug-to-lug measurement of 42.9mm . The iconic black Sharkhunter dial offers a classic, high-contrast aesthetic, providing perfect legibility, and is protected by a scratch-resistant sapphire crystal with anti-reflective coating . This professional-grade tool watch is powered by a Swiss automatic movement, operating at 28,800 vibrations per hour (4 Hz) and delivering a 50-hour power reserve . Its signature skeletonized GMT hand allows for effortless tracking of a second time zone, making it a practical companion for both divers and frequent travelers . Water-resistant to 250 meters (820 feet) and equipped with a screw-down crown and a unidirectional bezel featuring the brand’s signature “no-decompression” dive scale, it is engineered for rigorous underwater performance . The watch is completed by a comfortable and durable black FKM rubber strap, which features a folding clasp with a ratcheting wetsuit extension for a perfect fit over a dive suit . This modern adventurer’s tool seamlessly blends DOXA’s rich diving heritage with essential global functionality, offering professional-grade durability and reliability for those who explore both the depths and across time zones. Key specifications: 40mm stainless steel case; black dial with skeletonized GMT hand; Swiss automatic movement; 50-hour power reserve; black FKM rubber strap; 250m water resistance; sapphire crystal.