Unworn, Omega Seamaster Planet Ocean 600M, Ref# 217.30.42.21.01.001, box and papers.

The OMEGA Seamaster Planet Ocean 600M Ref. 217.30.42.21.01.001 is a professional dive watch that combines the legendary Seamaster heritage with OMEGA's latest technical innovations. Introduced as part of the newest Planet Ocean generation, this 42 mm model features a robust stainless steel case with refined brushed and polished finishes, complemented by a polished black ceramic unidirectional bezel with a white enamel diving scale and a Grade 5 titanium inner ring. The matte black dial delivers exceptional legibility thanks to rhodium-plated hands and applied indexes filled with white Super-LumiNova, while four Arabic numerals reinforce its bold, functional appearance. A flat scratch-resistant sapphire crystal with anti-reflective treatment on both sides protects the dial, and the Grade 5 titanium caseback is engraved with the iconic Seamaster Seahorse medallion. At its heart beats the OMEGA Co-Axial Master Chronometer Calibre 8912, a METAS-certified self-winding movement featuring a Co-Axial escapement, silicon balance spring, twin barrels mounted in series, and resistance to magnetic fields up to 15,000 gauss. Offering a 60-hour power reserve and an independently adjustable hour hand for convenient time-zone changes, it represents the pinnacle of modern Swiss watchmaking. Water-resistant to an impressive 600 meters and equipped with a screw-in crown and helium escape valve, this Planet Ocean is built for the most demanding underwater adventures while remaining elegant enough for everyday wear. Completing the watch is a stainless steel bracelet with a foldover clasp, comfort adjustment, and diver extension.

TECHNICAL DATA

Movement

• OMEGA Co-Axial Master Chronometer Calibre 8912
• Swiss self-winding mechanical movement
• METAS-certified Master Chronometer
• Co-Axial escapement with free-sprung balance and silicon balance spring
• Twin barrels mounted in series
• Automatic winding in both directions
• Anti-magnetic to 15,000 gauss
• Time-zone function
• Power reserve: 60 hours
• Frequency: 25,200 vph (3.5 Hz)

Case

• Stainless steel case
• Unidirectional rotating black ceramic bezel
• White enamel diving scale with Grade 5 titanium inner ring
• Matte black dial
• Rhodium-plated hands and applied indexes with white Super-LumiNova
• Four applied Arabic numerals
• Flat scratch-resistant sapphire crystal with anti-reflective treatment on both sides
• Grade 5 titanium caseback with Seahorse medallion
• Screw-in crown and helium escape valve
• Water resistance: 600 m / 2,000 ft (60 ATM)

Dimensions

• Case diameter: 42 mm
• Thickness: 13.79 mm
• Lug-to-lug: 47.50 mm
• Between lugs: 21 mm
• Approximate weight: 177 g

Strap

• Stainless steel bracelet
• Foldover clasp with comfort setting
• Integrated diver extension

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