SEIKO Prospex AUTOMATIC SRP773PRICE ( 3 ) YEAR WARRANTY AUTHORIZED DEALERRef. No. SRP773Movement AutomaticCase material SteelBracelet material SteelCaliber 4R36Movement AutomaticMovement/Caliber 4R36CaseCase material SteelCase diameter 44.3 mmThickness 1.66 mmWaterproof 20 ATMGlass