Doxa SUB 300 Beta Searambler

Doxa SUB 300 Beta Searambler 830.10.021.20
Images Courtesy of Doxa
Doxa SUB 300 Beta Searambler 830.10.021.20

Searambler

Reference Number :

830.10.021.20

Series : SUB 300 Beta
Retail: $2,250
(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 TakeAlright, check out the DOXA SUB 300 Beta Searambler – it's like DOXA took their legendary diver, sent it to a Swiss finishing school, but made sure it didn't forget how to get its hands dirty. That slimmer 11.95mm case feels surprisingly svelte for a 300-meter diver, making it totally wearable topside without sacrificing an ounce of its tool-watch cred. The Searambler dial, with that sunray finish and subtle wave pattern, is just class. It catches the light beautifully, shifting from bright silver to deeper tones. Paired with the tough black ceramic bezel (way more scratch-proof than the old-school stuff), it's got this modern edge. You still get the hardcore dive specs – screw-down crown, 30 ATM resistance, the helium valve for serious dives – but it feels more refined. Whether you go for the iconic "Beads of Rice" bracelet or the comfy FKM rubber, that ratcheting clasp is pure genius for quick adjustments. It's powered by a reliable Swiss automatic ticker, ready for adventure or just looking sharp downtown. It’s the DOXA spirit, updated.
DescriptionThe SUB 300 Beta Searambler, reference 830.10.021.20, is engineered with a stainless steel case measuring 42.50 mm in diameter and 44.50 mm lug-to-lug. Its vertical dimension, or height, is notably reduced to 11.95 mm, facilitating a slimmer profile compared to traditional SUB 300 models. Case integrity under pressure is ensured by a screw-down crown mechanism and a solid stainless steel screw-down case back. Water resistance is rated at 30 atmospheres, equivalent to 300 meters or 984 feet, qualifying the timepiece for professional diving applications. A critical component for saturation diving, a helium release valve, is integrated into the case design. Protecting the dial is a scratch-resistant sapphire crystal, offering superior durability and clarity compared to mineral glass or acrylic alternatives. The timepiece incorporates a unidirectional rotating bezel constructed from black ceramic, marked in meters for dive time tracking, providing enhanced resistance to scratches and fading compared to traditional aluminum inserts. Time indication includes hours, minutes, and central seconds, supplemented by a date function displayed through an aperture on the dial.

Powering the SUB 300 Beta Searambler is a Swiss-made mechanical movement featuring automatic self-winding capabilities. This calibre operates at a frequency of 28,800 vibrations per hour (4.0 Hz), a standard for contemporary mechanical watches contributing to accuracy and smooth sweep of the seconds hand. The movement provides a power reserve of approximately 38 hours when fully wound, allowing the watch to continue running autonomously for over a day and a half off the wrist. As specified, the movement bears decoration executed by DOXA, adding an aesthetic refinement visible should the case back be transparent, although this model features a solid back. Attachment options include either a stainless steel "Beads of Rice" bracelet or an FKM rubber strap, both equipped with a folding clasp incorporating a ratcheting wetsuit extension mechanism. This extension allows for quick adjustments to fit over a wetsuit sleeve without requiring tools. The lug width for strap or bracelet attachment is standardized at 20.00 mm. The dial exhibits a sunray finish combined with a stamped wave structure, providing visual depth and texture.
GenderMen
SignaturesDOXA
Country of OriginSwitzerland
Case Size42.5 mm
MovementAutomatic
FunctionsHours, Minutes, Seconds, Date
Power Reserve38 Hours
Case MaterialsStainless Steel
Bezel MaterialsCeramic
Lug MaterialsStainless Steel
Case BackSolid
CrownScrew Down
Dial ColorWhite
Band TypeRubber
Clasp TypeDeployant
Band ColorBlack
Year Made2020s
Limited EditionNo
Hour MarkersIndex
Band Width20 mm
Case Thickness11.95 mm
Case ShapeCushion
StyleDiver
Water Resistance 300 Meters
Crystal Sapphire
Lug to Lug 44.5 mm
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