Size;Mens Case Material;Stainless Steel Dial Color:Black Bracelet/Strap:Stainless Steel Brushed Clasp Type:Push Button Foldover Clasp Movement:Automatic - Chronometer Screw Down Crown:Yes Bezel:Uni-Directional Rotating Crystal:Scratch Resistant Sapphire Case Back:Transparent Water Resistant:600m/2000ft Case Diameter:45.5mm Case Thickness:16.9mm Warranty: 2 Year Omega 232.30.46.21.01.003 Complete Details: •Brushed/Satin finished stainless steel case with polished finished beveled edges. •Brushed finished stainless steel bracelet with polished finished edges. •Bezel: ◦Polished & brushed ribbed edge. ◦Grey ceramic fill. ◦Satin finished steel numbers, indexes & inner rim. •Matte black dial. •Applied polished steel index hour markers with blue luminescent fill. •Applied metallic orange colored 12, 6 & 9 hour markers. •Polished steel hands: hour & seconds hand with blue luminescent fill, minute hand with green luminescent fill as does the 12 o'clock dot on the rotating bezel. •Date window displayed at the 3 o'clock position •Helium Escapement Valve located on the edge of the case at the 10 o'clock position •Slightly domed sapphire crystal. •Movement: ◦Omega caliber 8500, beats at 25,200 vph, contains 39 Jewels & has an approximate power reserve of 60 hours - thanks to its twin barrels mounted in series. ◦The movement features Omega's "Si 14" silicon balance spring, which contributes to the movements outstanding resistance to shock and to environmental disturbances and thus, to the watch’s chronometric performance. ◦The movement also features the now-standard Co-Axial Escapement which contributes to greater precision, stability & durability. The Co-Axial escapement has less friction & reduces the necessity of lubrication thus reducing the time required between servicing. ◦The combination of the SI 14 balance spring & the Co-Axial escapement makes for an extremely reliable & stable movement. ◦The rotor & visible bridges are decorated with a unique "arabesque" wave design finish. This watch is also known as 23230462101003