Case Crystal | Sapphire | Case Size | 44.25mm | Case Back | open | Case Material | black ceramic | Crown | screw down | Bezel | Fixed Tachymeter black ceramic bezel | Indexes | Indexes | Water Resistance | 50m | | Movement Movement Type | Automatic | Movement | 000 gauss. Silicon balance-spring, 12-hour and 60-minute recorders.?, 2 barrels mounted in series, approved by METAS, minute and chronograph seconds hands, Omega Co-Axil cailber 9900 self-winding chronograph with column wheel and Co-Axial escapement. Certified Master Chronometer, resistant to magnetic fields reaching 15, small seconds hand, time zone function. Central hour | Power Reserve | 60 Hour | | General Bracelet/Strap | black coated nylon fabric strap | Collection | Speedmaster | Brand | Omega | Warranty | 5 Year Manufacturer's Warranty | |