Omega Men’s 3876.50.31 Speedmaster Chronograph Moonphase Hand Wind Black Leather Watch

black leather Strap. stainless steel case. black stainless steel, tachymeter bezel. black dial with Silver hands and Silver index hour markers. chronograph moonphase hand wind. calibre 1866 mechanical movement. sapphire crystal. 42mmx 42mmx 14mm case. 20mm band width. 30 meters water resistant. 3876.50.31