ROLEX OYESTER SUPERLATIVE CHRONOMETER

A Rolex Submariner's "Superlative Chronometer" certification signifies it is a Swiss Chronometer that has passed a more rigorous, in-house testing process, achieving , A standard higher than that of a COSC-certified chronometer. Key features include a 41mm Oyster case with a unidirectional rotatable 60-minute graduated Cerachrom bezel, a self-winding mechanical movement (Calibre 3235 for the Submariner Date, Calibre 3230 for the no-date model), and an Oyster Strap with the Glidelock extension system

• Type: Perpetual,
• Calibre: 3235 (for Submariner Date)
• Precision: -2/+2 sec/day, after casing
• Functions: Center hour, minute, and 
• Oscillator: Paramagnetic blue Parachrom hairspring, high-performance Paraflex shock absorbers
• Winding: Bidirectional self-winding via Perpetual rotor