MOVEMENT
Perpetual, mechanical chronograph, self-winding
CALIBRE
4130, Manufacture Rolex
FUNCTIONS
Centre hour and minute hands, small seconds hand at 6 o'clock. Chronograph centre second hand accurate to within 1/8 of a second, 30-minute counter at 3 o'clock and 12-hour counter at 9 o'clock. Stop seconds for precise time setting
PRECISION
Officially certified Swiss chronometer (COSC)
OSCILLATOR
Paramagnetic blue Parachrom hairspring
WINDING
Bidirectional self-winding via Perpetual rotor