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Doxa Sub 300β Searambler

SKU: 830.10.021.10 

  • $2,290.00
or call: +1 (650) 347-2221
  • Doxa Authorized Dealer
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  • Extended Warranty more info

An adventurous spirit with modern embellishments

In 1968, DOXA launched the SUB 300T Conquistador, the first general public diver's watch equipped with a helium release valve. 50 years later, the SUB 300β sports watch combines DOXA's pioneering functionality with style, maintaining foundational tool watch features in a redesigned 42.5 mm diameter case, now slimmer at 11.95 mm. The black ceramic bezel and screw-down crown enhance its sport-chic character, complemented by a sophisticated sunburst dial finish. Available with an FKM rubber strap or stainless-steel "Beads of Rice" bracelet, both featuring a ratcheting folding clasp, the watch is water-resistant up to 300 meters. With a scratch-resistant sapphire crystal, Swiss automatic movement, and a power reserve of around 38 hours, the SUB 300β is engineered for safety and exploration.


  • Movement: Swiss mechanical automatic, self-winding
  • Case: 42.5mm stainless steel (11.95mm thick)
  • Features: Sapphire crystal, unidirectional rotating bezel, helium release valve
  • Dial: Stamped wave pattern & painted luminous hour markers
  • Bezel: Unidirectional rotating bezel in ceramic
  • Power Reserve: 38 hours
  • Frequency: 28,800 vph (4.0 Hz)
  • Functions: Hours, minutes, seconds and date
  • Crown: Screw-down
  • Case Back: Stainless steel, screw down
  • Water Resistance: 30 ATM / 300 meters
  • Bracelet: Stainless steel bracelet "Beads of Rice", folding clasp with ratcheting wetsuit extension