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Quick TakeForget the murky depths for a second; the DOXA SUB 300T Whitepearl is like strapping an iceberg to your wrist, but way more functional and significantly less melty. It's got that legendary DOXA toughness, built like a mini-submarine with its hefty 316L steel case, screw-down bits, and that insane 1200-meter water resistance – overkill in the best possible way. That crisp white dial, the "Whitepearl," gives it a sharp, almost stark look, cutting through the usual dark diver aesthetic. It’s clean, legible, and pops against the functional black markings and the tool-like bezel. Inside, the reliable Swiss automatic heart beats away, keeping track of hours, minutes, seconds, and the date, while you're busy timing dives (or maybe just your lunch break) with that iconic no-deco bezel. The helium release valve is pure saturation diver cred, even if your deepest dive is the office coffee machine. Whether on the classic "Beads of Rice" steel or the sporty rubber, it’s a serious piece of kit that somehow manages to look cool and contemporary, a blast of arctic air in the watch world.
DescriptionThis timepiece employs a robust case architecture fabricated from high-grade 316L stainless steel, ensuring superior corrosion resistance and structural integrity essential for demanding underwater environments. Its dimensional specifications are precisely controlled, measuring 42.50 mm in diameter and 44.50 mm lug-to-lug, with a vertical profile height of 13.65 mm. Water ingress protection is engineered to an exceptional depth rating of 1,200 meters (equivalent to 120 ATM or 3,937 feet), achieved through meticulous sealing systems including a screw-down crown mechanism and a solid 316L stainless steel screw-down case back. Further enhancing its capability for saturation diving applications is the integration of an automatic Helium Release Valve (HRV), facilitating the safe expulsion of trapped helium molecules during decompression phases, thereby preserving the integrity of the watch crystal and seals under pressure differentials. The crystal itself is a scratch-resistant sapphire element, treated with an anti-reflective coating to maximize dial legibility by minimizing glare under various lighting conditions, particularly critical underwater.
Powering the timekeeping and date functions is a Swiss-origin mechanical movement featuring automatic, self-winding capabilities. This caliber operates at a frequency of 28,800 vibrations per hour (4.0 Hz), a standard for contemporary precision timekeeping, and provides a power reserve of approximately 38 hours when fully wound. The movement incorporates decoration executed by DOXA. Time indication is presented via central hour, minute, and second hands, supplemented by a date display aperture. A key functional component for dive timing is the patented unidirectional rotating bezel, calibrated in feet, which incorporates an integrated no-decompression dive time calculator. This safety feature allows divers to monitor elapsed time and calculate safe bottom times according to established dive tables. Visibility in low-light conditions, typical of deep dives, is guaranteed through the application of Super-LumiNova luminescent material on all critical dive-related indicators, including hands and dial markers. Attachment to the wrist is facilitated by either a 316L stainless steel "Beads of Rice" bracelet or an FKM rubber strap, both options featuring a secure folding clasp equipped with a ratcheting wetsuit extension for convenient adjustment over dive suit sleeves. The interface point for strap or bracelet attachment is standardized at a 20.00 mm lug width.