Doxa

Sea Emerald

Reference Number :

840.10.131.26-N

Series : SUB 300T

Retail: $1,630

(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 TakeForget subtle – the DOXA SUB 300T Sea Emerald crashes the party with a vibrant green dial that screams adventure. This isn't just a pretty face, though; it's a direct descendant of the legendary Conquistador, packing serious dive watch credentials into its sturdy 42.5mm steel frame. We're talking a colossal 1,200 meters of water resistance, enough to explore depths most only dream of, backed up by a helium release valve for those serious saturation dives. The iconic cushion case feels substantial yet surprisingly wearable, and that Beads of Rice bracelet is pure retro cool with a practical wetsuit extension. Plus, the patented DOXA bezel isn't just for show – it's a functional no-decompression dive time calculator, a nod to its professional heritage. Powered by a reliable Swiss automatic movement and topped with sapphire crystal, the Sea Emerald is a tool watch that refuses to blend in, ready for deep-sea missions or just making a bold statement topside.

DescriptionThe timepiece designated as Reference 840.10.131.26-N, the Doxa SUB 300T Sea Emerald, utilizes a Swiss mechanical automatic movement. This self-winding mechanism operates at a frequency of 28,800 vibrations per hour (4.0 Hz) and provides a power reserve of approximately 38 hours. The movement features decoration applied by DOXA. Its functions include the display of hours, minutes, seconds, and the date. The primary structure, the case, is fabricated from high-grade 316L stainless steel. Nominal case dimensions are recorded as 42.50 mm in diameter and 44.50 mm lug-to-lug, with a total height profile of 13.65 mm. Enhancing its underwater operational capacity, the design incorporates a screw-down crown mechanism and a solid stainless steel screw-down case back.

Engineered for deep diving applications, this model achieves a water resistance rating of 120 atmospheres, equivalent to 1,200 meters or 3,937 feet. A key feature for saturation diving is the integrated helium release valve (HRV). Protecting the dial is a scratch-resistant sapphire crystal, treated with an anti-reflective coating to optimize legibility under various lighting conditions. The SUB 300T includes DOXA's patented unidirectional rotating bezel, calibrated in feet, which incorporates a no-decompression dive time calculator. Legibility in low-light environments, particularly underwater, is ensured through the application of Super-LumiNova® luminescent material on all dive-critical indicators. The dial itself presents a sunray finish in the Sea Emerald colorway. The watch is supplied with a 316L stainless steel "Beads of Rice" bracelet, secured by a folding clasp that includes a ratcheting wetsuit extension mechanism featuring the DOXA fish symbol. An alternative NATO strap option with a pin buckle and quick-release spring bars is also mentioned. The lug width for strap or bracelet attachment is specified as 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