Doxa

Searambler

Reference Number :

821.10.021.20

Series : SUB 300

Retail: $2,550

(As of: 05/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Doxa. If you are interested in selling this watch to us, you can contact us here.

Quick TakeSlipping on the SUB 300 Searambler feels like shaking hands with diving history itself. It's got that unmistakable '60s cool, a direct descendant of the piece that shook up the underwater world. That silver dial – the Searambler – isn't just for looks; it gleams with a purpose, reflecting light even in murky depths, a sophisticated counterpoint to its brighter siblings. The cushion case sits just right, substantial without being clunky, forged from tough 316L steel ready for anything. You feel the precision engineering in the smooth sweep of the seconds hand, powered by that COSC-certified automatic heart ticking away reliably beneath. Twisting the patented bezel feels solid, purposeful – a tool designed for serious work, calculating dive times with its unique dual scale. It's not pretending to be anything other than what it is: a highly capable, historically significant dive watch with a bright, legible face, ready for the pressure, whether that's 300 meters down or just navigating the Monday morning commute.

DescriptionThe timekeeping instrument designated as Doxa SUB 300 Searambler, reference 821.10.021.20, features a case constructed from high-grade 316L stainless steel. Its dimensional properties measure 42.50 mm by 45.00 mm, with a vertical profile height of 13.40 mm. Engineered for subaquatic environments, the case incorporates a screw-down crown mechanism and a solid stainless steel screw-down case back, achieving a water resistance rating certified to 30 atmospheres, equivalent to 300 meters or 984 feet. Protecting the dial assembly is a scratch-resistant sapphire crystal, fabricated with a domed profile reminiscent of the original 1967 model's plexiglass, and treated with an anti-reflective coating to enhance legibility. A critical component for dive time management is the unidirectional rotating bezel, a patented DOXA design. This bezel integrates a dual scale, indicating dive duration in minutes and depth correlation in meters, specifically calibrated for calculating no-decompression stop limits.

Internally, the watch houses a Swiss mechanical automatic movement, operating on a self-winding principle. This caliber has undergone rigorous testing and achieved COSC (Contrôle Officiel Suisse des Chronomètres) certification, verifying its adherence to stringent standards for precision, operational robustness, and long-term reliability. The movement operates at a frequency of 28,800 vibrations per hour (4.0 Hz) and maintains a power reserve autonomously for approximately 38 hours when fully wound. Functional indications provided include central hours, minutes, and seconds, supplemented by a date aperture positioned at the 3 o'clock index. Lume application utilizes Super-LumiNova® on all essential dive-related markings to ensure optimal visibility under low-light underwater conditions. Attachment options include a stainless steel "Beads of Rice" bracelet or an FKM rubber strap, both equipped with folding clasps incorporating wetsuit extensions; the rubber strap features a ratcheting adjustment mechanism. The lug width specification is 20.00 mm.

GenderMen

SignaturesDOXA

Country of OriginSwitzerland

Case Size42.5 mm

MovementAutomatic

FunctionsHours, Minutes, Seconds, Date

Power Reserve38 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSolid

CrownScrew Down