🔹 Overview
The O Seamaster Planet Ocean 600M Ref. 215.63.44.21.03.001 is a professional dive watch reimagined with luxury and innovation. Housed in a 43.5 mm case crafted from O’s proprietary 18K Sedna™ gold, this timepiece embodies the spirit of exploration while radiating prestige. Its deep blue ceramic dial and Ceragold™ diving bezel highlight a striking contrast of oceanic depth and golden brilliance, making it as refined as it is resilient.

💎 Key Specifications
Reference: 215.63.44.21.03.001
Case: 43.5 mm, 18K Sedna™ gold
Bezel: Blue ceramic with Ceragold™ diving scale, unidirectional
Dial: Blue ceramic with sun-brushed finish, applied Sedna™ gold indexes and hands with white Super-LumiNova
Crystal: Domed scratch-resistant sapphire with anti-reflective treatment
Strap: Blue leather strap with rubber lining, Sedna™ gold buckle
Functions: Hours, minutes, seconds, date at 3 o’clock
Water Resistance: 600 m / 2000 ft, helium escape valve, screw-down crown

⏱️ Movement
Type: Perpetual, mechanical, self-winding
Caliber: O Co-Axial Master Chronometer Calibre 8901
Certification: METAS Master Chronometer, resistant to magnetic fields up to 15,000 gauss
Features: Central hours, minutes, seconds, date, twin-barrel system for stability, Co-Axial escapement for reduced friction
Power Reserve: ~60 hours
Finishing: Geneva waves in arabesque, blackened screws, balance bridge, rotor in 18K Sedna™ gold, visible through sapphire caseback

✅ Conclusion
The O Seamaster Planet Ocean 600M Ref. 215.63.44.21.03.001 redefines luxury diving with its blend of technical mastery and opulent design. Its Sedna™ gold case, blue ceramic dial, and Ceragold™ bezel deliver both durability and sophistication, while the calibre 8901 ensures precision and reliability even in extreme conditions. More than a diver’s tool, it is a statement piece for collectors, adventurers, and those who demand excellence above and below the surface.