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 pioneering spirit. Inspired by the 4th generation Speedmaster, this 42 mm Moonwatch in 18K Moonshine Gold, has a sun-brushed 18K Moonshine Gold step dial with blackened subdials and indexes. The black ceramic bezel ring, with OMEGA Ceragold tachymeter scale, features the famous dot over 90. As a tribute to its history, the underside of the integrated black rubber strap has a lunar surface pattern in positive relief. The caseback in polished 18K Moonshine Gold has double bevels and the words FIRST WATCH WORN ON THE MOON engraved in black. The Moonwatch is powered by OMEGA's Co-Axial Master Chronometer Calibre 3861 with special luxury finish. 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 Moonshine Gold Dial color Yellow Crystal Scratch resistant sapphire crystal with anti reflective treatment inside Water resistance 5 bar (50 metres / 167 feet) Total product weight (approx.) 236 g Caliber Omega 3861 Movement Type Manual winding Power reserve 50 hours