ROLEX OYSTER PERPETUAL AIR-KING REF. 116900 CAL. 3131 SELF-WINDING CHRONOMETER

Reference
116900

MODEL CASE
Oyster, 40 mm, steel
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
904L steel
BEZEL
Smooth
WINDING CROWN
Screw-down, Twinlock double waterproofness system

CRYSTAL
Scratch-resistant sapphire

WATER-RESISTANCE
Waterproof to 100 metres / 330 feet

MOVEMENT
Perpetual, mechanical , self-winding , with a magnetic shield to protect the movement
CALIBRE
3131, Manufacture Rolex
PRECISION
-2/+2 sec/day, after casing
FUNCTIONS
Centre hour, minute and seconds hands. Stop-seconds for precise time setting
OSCILLATOR
Paramagnetic blue Parachrom hairspring
WINDING
Bidirectional self-winding via Perpetual rotor
POWER RESERVE
Approximately 48 hours

BRACELET
Oyster, flat three-piece links
BRACELET MATERIAL
904L steel
CLASP
Folding Oysterclasp with Easylink 5 mm comfort extension link

DIAL
Black

DETAILS
Highly legible Chromalight display with long-lasting blue luminescence

CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)