Case Crystal | Sapphire | Case Size | 45.5mm | Case Back | open | Case Material | black ceramic | Crown | screw down | Bezel | Unidirectional rotating black ceramic bezel | Water Resistance | 600m | Case Shape | Round | | Movement Movement Type | Automatic | Movement | approved by METAS, automatic winding in both directions, GMT and time zone functions. Free sprung-balance with silicon balance spring, Omega Caliber 8906 Self-winding movement with Co-Axial escapement. Certified Master Chronometer, resistant to magnetic fields reaching 15, two barrels mounted in series | Power Reserve | 60 Hour | | General Bracelet/Strap | black rubber strap | Collection | Seamaster | Brand | Omega | Warranty | 5 Year Manufacturer's Warranty | |