The Omega Seamaster Diver 300M (Reference 2561.80.00) is the iconic, mid-size 36.25mm quartz version of the legendary "James Bond" Seamaster Professional. Released in the 1990s and produced until the mid-2000s, this neo-vintage classic delivers the exact styling of the full-size 41mm model (Ref. 2541.80) but in a compact, highly wearable, and low-maintenance package. 

Notably, this exact reference is famously known as the "Prince William specification" because the Prince of Wales has worn his continuously for decades, a sentimental gift from his late mother, Princess Diana.

• Case Size: 36.25 mm diameter, 11 mm thickness, ~42.5 mm lug-to-lug. 

• Movement: Omega Caliber 1538 high-grade quartz movement (based on the reliable ETA 255.461). It features an End-Of-Life (EOL) battery indicator and a highly practical jump-hour function for quick timezone changes without interrupting the time. 

• Dial: Dark blue with the classic laser-engraved wave pattern, tritium or Super-LumiNova filled skeleton hands, and a date window at 3 o'clock. 

• Bezel: Blue aluminum unidirectional rotating countdown dive bezel. 

• Water Resistance: 300 meters (1,000 feet) equipped with a screw-down crown and a functioning helium escape valve at 10 o'clock. 

• Bracelet: Five-piece link stainless steel "Bond" style bracelet featuring a folding dive clasp and integrated wetsuit extension.