The Speedmaster Moonwatch is one of the world's most iconic timepieces. Having been a part of all six moon landings, the legendary chronograph is an impressive representation of the brand's adventurous pioneering spirit. Presented on a five-arched-links-per-row bracelet, this 42 mm Moonwatch in 18K Sedna gold features sapphire crystal glass on the front as well as on the caseback. Inspired by the 4th generation Speedmaster style worn on the moon, it also includes an asymmetrical case, black step dial and the famous dot over 90 on the anodised aluminium bezel ring. The watch is driven by the OMEGA Co-Axial Master Chronometer Calibre 3861, which powers the small seconds sub-dial, 30-minute recorder and 12-hour recorder, along with the central chronograph function. Between lugs Open Case Measurement Modal 20 mm Lug to lug Open Case Measurement Modal 47.5 mm Thickness Open Case Measurement Modal 13.2 mm Case diameter Open Case Measurement Modal 42 mm Case Sedna Gold Dial color Black Crystal Domed, scratch resistant sapphire crystal with anti reflective treatment inside Water resistance 5 bar (50 metres / 167 feet) Total product weight (approx.) 216 g Caliber Omega 3861 Movement Type Manual winding Power reserve 50 hours