Doxa

Sea Emerald

Reference Number :

821.10.131.26-N

Series : SUB 300

Retail: $2,420

(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 the SUB 300 Sea Emerald onto the wrist feels like strapping on a piece of diving history, reimagined with a splash of modern vibrancy. That sunray emerald dial isn't just green; it captures light, shifting like sunlight filtering through kelp forests. It's a bold departure from the original orange, yet it retains that unmistakable DOXA tool-watch DNA. You can almost feel the heft of the 316L steel case, a solid block engineered to withstand pressure, housing a COSC-certified engine humming away reliably at 4 Hz. Turning the patented bezel provides satisfying clicks, each one a reminder of its purpose – calculating dive times, keeping you safe in the deep. The domed sapphire crystal beautifully distorts the edges of the dial, a charming nod to its vintage roots, while the Super-LumiNova ensures you won't lose track of time, even when exploring murky depths. Whether secured by the classic, comfortable 'Beads of Rice' bracelet with its practical wetsuit extension or the color-matched NATO, this watch isn't just telling time; it's telling a story of adventure waiting to happen.

DescriptionThe timepiece utilizes a Swiss mechanical automatic movement, ensuring self-winding operation. This movement has achieved COSC Chronometer certification, signifying adherence to stringent standards for precision and reliability under various conditions. Operating at a frequency of 28,800 vibrations per hour (4.0 Hz), the mechanism delivers smooth seconds hand motion and maintains accuracy. Its power reserve capacity extends to 38 hours when fully wound. Furthermore, the movement incorporates decorative elements applied by DOXA, visible upon inspection of the internal components through a potentially transparent case back or during servicing. Core timekeeping indications include hours, minutes, and central seconds, supplemented by a date display positioned conventionally at the 3 o'clock location on the dial for easy reference. The construction integrates a robust 316L stainless steel case, selected for its corrosion resistance and durability, essential properties for a watch designed for marine environments.

Dimensional specifications define the case with a diameter measuring 42.50 mm and a lug-to-lug distance of 45.00 mm, contributing to its wrist presence. The overall height is measured at 13.40 mm. Water integrity is secured through the implementation of a screw-down crown and a solid stainless steel screw-down case back, achieving a water resistance rating of 30 ATM, which translates to 300 meters or approximately 984 feet. Protecting the dial is a scratch-resistant sapphire crystal, featuring an anti-reflective treatment to minimize glare and enhance legibility. This crystal possesses a domed profile, echoing the plexiglass used on the original 1967 models. A critical feature for diving applications is the unidirectional rotating bezel, a Doxa patent, calibrated in meters. This bezel includes a dual scale indicating dive time in minutes and depth, facilitating the calculation of no-decompression stop limits during dives. Luminescence is provided by Super-LumiNova coatings applied to all dive-related markings, ensuring readability in low-light underwater conditions. The watch accommodates a strap width of 20.00 mm at the lugs. Options include a stainless steel "Beads of Rice" bracelet equipped with a folding clasp that incorporates a wetsuit extension piece, or a NATO strap secured with a pin buckle featuring quick-release spring bars for convenient strap changes. The dial itself presents a vibrant sunray finish.

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