One of OMEGA’s most iconic models, this OMEGA Speedmaster Moonwatch \'Blue Side of the Moon\' Automatic Chronometer Men’s Watch takes their spirit of adventure one step further with a Master Chronometer movement and a beautiful Moonphase display. At A Glance  Blue leather strap with white stitching 44.25mm blue ceramic case with 50m water resistance Blue ceramic bezel with tachymeter scale Scratch-resistant sapphire crystal glass with anti-reflective treatment on both sides Blue ceramic dial with 18ct white gold baton hour markers and hands Two chronograph sub-dials and moonphase indicator at 6 o\'clock Resistant to magnetic fields greater than 15,000 gauss OMEGA Co-Axial Master Chronometer calibre 9904 automatic movement 60 hour power reserve