Omega Seamaster Diver 300M Co-Axial Chronometer 41 mm（ 212.30.41.20.01.003）/WHP036716

"41mm, black, stainless steel
Automatic mechanical" 

Professional diving configuration: 300 meters water resistance, equipped with a black ceramic unidirectional rotating bezel (scratch-resistant, wear-resistant, and with long-lasting color) and a helium exhaust valve at the 10 o'clock position, meeting the pressure balance requirements during professional diving; 41mm stainless steel case is sturdy and fits the wrist shape, suitable for both sports and daily scenarios.
Coaxial movement and precise certification: Equipped with Omega 2500 automatic mechanical movement, featuring the iconic coaxial escapement system that reduces friction and extends maintenance period; Certified by the Swiss Official Chronometer (COSC), with a daily time error controlled within -4/+6 seconds, and a power reserve of approximately 48 hours.
Classic sports design: Black dial with white luminous circular hour markers and arrow hands (coated with Super-LumiNova night glow coating, allowing clear reading in the dark), with a calendar window at 3 o'clock position for practicality; Stainless steel bracelet with a folding clasp, balancing comfort of wearing and sporty style, with a scratch-resistant and wear-resistant sapphire glass watch crystal.
Brand heritage and practicality: The Seamaster series pays tribute to Omega's maritime exploration history, with a relief of the seahorse emblem on the back; 50 meters of daily water resistance + 5-year global warranty, with a design of the movement reducing the frequency of maintenance, making it a dual choice for "diving tool watch and commuter watch"