Omega Speedmaster Moon Watch 3188.8.131.52.01.005. Steel 42mm case which is water resistant to 50 meters. Hand wound Omega 1861 mechanical movement with a 48 hour power reserve. Hesalite crystal glass. Featuring a Black dial with baton hour markers and an outer Tachymeter bezel. Black sub dials. Steel bracelet with deployment clasp. Comes with 2 additional black textile straps, one with a Velcro fastener and one with a Tang buckle. Pre-Owned Unused. Box and papers dated August 2018.