Doxa

Aquamarine

Reference Number :

822.70.241.20

Series : SUB 300 Carbon

Retail: $3,990

(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 TakeTalk about a featherweight contender ready for the crushing deep! The DOXA SUB 300 Carbon Aquamarine isn't just a pretty face, though that bright Aquamarine dial against the stealthy, mottled forged carbon case is seriously striking. It's like high-tech dive gear met a tropical lagoon. You get the legendary SUB 300 toughness, now unbelievably light thanks to that carbon construction, making it super comfortable on the wrist, whether you're checking your dive time or just grabbing coffee. Inside beats a COSC-certified heart, so you know it's deadly accurate, and the 300-meter water resistance means it's not messing around. Details like the titanium inner case and screw-down back show the serious engineering, while the domed sapphire crystal gives a cool nod to its vintage roots. Finished with that comfy rubber strap and the essential dive extension clasp, this watch is a seamless blend of cutting-edge materials, proven dive heritage, and pure, vibrant personality. It feels less like a tool and more like a companion for adventure.

DescriptionThe timekeeping instrument designated as Doxa SUB 300 Carbon Aquamarine, reference number 822.70.241.20, utilizes a forged carbon case construction for its primary structural element. Dimensional parameters specify a diameter measuring 42.50 mm, extending to 45.00 mm across its longest axis, coupled with a vertical height profile of 13.40 mm. Ensuring environmental sealing integrity, the design incorporates a screw-down winding crown mechanism. Hydrostatic pressure resistance is rated to 30 atmospheres, which corresponds to a submersion depth capability of 300 meters or approximately 984 feet. Complementing the carbon exterior, critical internal components, specifically the movement chamber and the screw-down case back, are fabricated from titanium to enhance structural rigidity and pressure resistance while maintaining a low overall mass. The time display interface is protected by a scratch-resistant sapphire crystal, featuring an anti-reflective coating to maximize legibility under various lighting conditions. This crystal exhibits a domed profile, referencing the historical design precedents set by early SUB 300 models which employed curved plexiglass elements. Visual clarity in low ambient light scenarios is facilitated through the application of Super-LumiNova luminescent material to all dive-pertinent indicators on the dial and bezel.

Powering the temporal indication functions – hours, minutes, central seconds, and a date display located at the 3 o'clock aperture – is a Swiss origin, mechanically actuated, automatic self-winding movement. This calibre has successfully undergone the rigorous testing protocols required for Contrôle Officiel Suisse des Chronomètres (COSC) certification, guaranteeing its performance adheres to stringent chronometer standards regarding precision and consistency across various positions and temperatures. The movement operates at a standard frequency of 28,800 vibrations per hour (equivalent to 4.0 Hz) and offers a power reserve autonomously maintained for a duration of 38 hours when fully wound. Aesthetic refinement is applied through decoration executed by DOXA. Engagement with the elapsed time function is managed via a unidirectional rotating bezel, also constructed from carbon, featuring graduated markings calibrated in meters for dive timing calculations. The instrument is secured to the wrist via a fluoroelastomer (FKM) rubber strap, characterized by a lug width of 20.00 mm. This strap incorporates a folding clasp mechanism treated with a black Physical Vapor Deposition (PVD) coating for durability and aesthetic consistency. The clasp design includes a ratcheting wetsuit extension system, permitting incremental adjustments to accommodate the increased circumference required when worn over diving apparel. The clasp is further embellished with the DOXA fish symbol. The dial presentation is described as the iconic DOXA layout, specifically in the Aquamarine color variant.

GenderMen

SignaturesDOXA

Country of OriginSwitzerland

Case Size42.5 mm

MovementAutomatic

FunctionsHours, Minutes, Seconds, Date

Power Reserve38 Hours

Case MaterialsCarbon

Bezel MaterialsCarbon

Lug MaterialsCarbon

Case BackSolid

CrownScrew Down