Omega Speedmaster Moon Watch 3184.108.40.206.01.005. Steel 42mm case which is water resistant to 50 meters. Hand wound Omega 1861 mechanical movement. 48 hour power reserve. Hesalite crystal glass. Black dial with baton hour markers. Outer Tachymeter bezel. Black sub dials. Steel bracelet with deployment clasp. Comes with two additional black textile straps, one with a velcro fastener and one with a Tang buckle. Box and papers dated May 2017. Our reference A1850.