Case Crystal | Sapphire | Case Size | 39.5mm | Case Back | open | Case Material | stainless steel | 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., Free sprung-balance with silicon balance spring, Omega caliber 8800 Self-winding movement with Co-Axial escapement. Certified Master Chronometer, resistant to magnetic fields reaching 15 | Power Reserve | 55 Hour | | General Bracelet/Strap | stainless steel | Collection | Seamaster | Warranty | 5 Year Manufacturer's Warranty | |