The Omega Seamaster Diver 300M Ref. 210.30.42.20.04.001 features a 42mm stainless steel case, white ceramic wave-pattern dial, black ceramic diving bezel, and stainless steel bracelet. Its contrasting white-and-black configuration is powered by Omega's Co-Axial Master Chronometer Calibre 8800 automatic movement.

The Calibre 8800 provides approximately 55 hours of power reserve, while the Seamaster offers 300 meters of water resistance, a helium escape valve, sapphire crystal, and transparent caseback.

The watch comes as a full set with an open warranty card. Also included are OEM Omega red rubber straps, an OEM Omega folding buckle, and the corresponding strap travel case. The watch shows normal signs of previous wear throughout.

Important Mechanical Disclosure: The date wheel does not currently advance correctly at midnight. The date can be changed manually through the crown. Service may be required to correct the automatic date-change mechanism. The watch is not under warranty.

Model: Omega Seamaster Diver 300M
Reference: 210.30.42.20.04.001
Case Size: 42mm
Case Material: Stainless Steel
Movement: Omega Co-Axial Master Chronometer Calibre 8800 Automatic
Power Reserve: Approximately 55 Hours
Crystal: Sapphire
Dial: White Ceramic Wave-Pattern Dial
Bezel: Black Ceramic Unidirectional Diving Bezel
Water Resistance: 300 Meters
Bracelet: Stainless Steel
Additional Strap: OEM Omega Red Rubber Straps with OEM Folding Buckle
Includes: Full Set with Open Warranty Card and Omega Strap Travel Case
Warranty: Not Under Warranty
Mechanical Disclosure: Date Does Not Advance Correctly at Midnight; Manual Date Adjustment Functions; Service May Be Required
Condition: Good Pre-Owned Condition with Signs of Normal Wear Throughout