Omega Seamaster Professional Diver 300M Co-Axial Master Chronometer 43,5mm, Black ceramic, 43,5mm, Ref# 210.92.44.20.01.001

The Seamaster Professional Diver 300M is a modern adaptation of a legendary dive watch. Its 43.5mm case is made of black ceramic and grade 5 titanium with a black ceramic bezel and white enamel diving scale. The brushed black ceramic dial's laser-engraved waves, PVD titanium indexes filled with Super-LumiNova, Skeletonized hour and minute hands and conical helium escape valve create a bold look. Case back is oriented and aligned with the watch, thanks to Omega's patented NAIAD Lock system. The watch is powered by the Omega Master Co-Axial caliber 8806, contains 35 jewels and has an approximate power reserve of 55 hours. This delightful timepiece is presented on a black rubber strap with a black ceramic buckle.

• Make: Omega
• Model: Diver 300M Co-Axial Master Chronometer 
• Reference: 210.92.44.20.01.001
• Diameter: 43,5mm
• Case material: Black ceramic and grade 5 titanium
• Dial color: Black
• Bezel Type: Unidirectional rotating
• Bezel Color: Black and white enamel diving scale
• Bezel Material: Ceramic
• Crystal: Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
• Movement: Automatic, self-winding mechanical
• Bracelet Type: Strap
• Bracelet Material: Black rubber
• Clasp: Black ceramic Pin buckle
• Functions: Date, Hour, Minutes, Seconds, Anti‑magnetic, Chronograph, Helium escape valve, Master Chronometer Certified, Screw‑in crown
• Water resistance: Up to a 300m/1000ft (30 ATM)
• Warranty: Balance of 5-Year Omega International Warranty

The watch is unworn and comes complete with full set of original accessories, such as watch box, warranty card dated recently, booklets and manuals.

All Pre-Owned Rolex watches are guaranteed to be 100% genuine and certified authentic. Certificates are issued by Watch CSA, the industry's leading independent authority on watch authentication.

All orders are prepared and fulfilled only after payment has been received and fully processed. Once confirmed, orders are typically shipped within 1–3 business days (for models that require sourcing, this timeframe might be longer).

We ship via FedEx Overnight Priority with an Adult Signature Requirement, meaning someone 21 years or older must be present at the delivery address to sign for the package.

For full details regarding shipping options, delivery timelines, and rates, please review our Shipping Policy.

We offer a 3-day return period on eligible watches, starting from the date of delivery. To qualify, the watch must be returned in the same condition as received—unworn, unaltered, and with all original packaging, tags, and accessories included.

All returns must be approved in advance. Once received and inspected, refunds are processed promptly back to the original payment method.

For full details on eligibility, conditions, and the return process, please refer to our Return Policy.