Royal Oak Offshore Selfwinding Chronograph 37mm Black Dial in Steel Ref. 26231ST.ZZ.D002CA.01

Movement: Asian 7750 25J Automatic Chronograph Movement at 28800 vph with second at 12 and working regulator
Functions: Hours, minutes, sub-seconds and date display; chronograph
Case: Solid 316L stainless steel case
Crystal: Scratch-proof sapphire crystal with colorless anti-reflection coating Dial: Black dial
Bezel: Diamond bezel
Strap: Black rubber strap
Clasp: Deployant buckle
Water resistance: <30 Meters