SEIKO PROSPEX SRPB99Movement: Caliber 4R35Frequency: 21,600vphPower reserve: 41 hoursJewels: 24Accuracy: -35/+45 sec per dayBezel: Unidirectional with 120 clicksLug width: 22mmCrystal: HardlexWater resistance: 200mDiameter: 43.8mmThickness: 13mmLug-to-lug: 47.5mmMade in Japan