Brand : Seiko Category : Watches MOVEMENT Caliber Number : 6R27 Movement Type : Automatic with manual winding Precision : +25 to -15 seconds per day Power Reserve : Approx. 45 hours Jewels : 29 Functions : Date hand, Power reserve indicator, Stop seconds hand function, Date display CASE/ BAND Case Material : Stainless Steel Crystal : Box with sapphire crystal Thickness : 12.6 mm Diameter : 37.5 mm Lug-to-lug :39.3 mm Crystal coating : Anti-reflective coating on inner surface OTHER DETAILS Water Resistance : 5 bar (50m) Weight : 74.0 g Features : Limited Edition on the case back, Serial number engraved on the case back, Enamel dial, Screw case back