Omega Speedmaster Moonwatch Chronograph "Dark Side of the Moon" Apollo 8 - 44.25 mm Black Ceramic Case - Black Dial - Perforated Black Leather Strap - 311.92.44.30.01.001 46.0 unidirectional rotating blue ceramic bezel

unidirectional rotating blue ceramic bezel with Liquidmetal diving scale

polished black ceramic dial with orange Arabic numerals

The Black Bay Chrono is the first chronograph in the TUDOR family

20mm thick

green alligator leather strap

Omega Speedmaster Moonwatch Chronograph "Dark Side of the Moon" Apollo 8 - 44.25 mm Black Ceramic Case - Black Dial - Perforated Black Leather Strap - 311.92.44.30.01.001 46.0 unidirectional rotating blue ceramic bezel44. 25 mm black ceramic case, transparent back, scratch resistant sapphire crystal with anti reflective treatment on both sides, black dial scratch resistant sapphire crystal with anti reflective treatment on both sides, Calibre Omega 1869 manual winding movement with chronograph and small seconds, approximately 48 hours of power reserve, perforated black leather strap. Water resistant to 50 metres (167 feet).