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MovementCaliber Number6R35Movement TypeAutomatic with manual windingPrecision+25 to -15 seconds per dayPower reserveApprox. 70 hoursJewels24FunctionsStop second hand functionDate displayCase/BandCase MaterialStainless steel (super hard coating)Case SizeThickness:11.1mmDiameter:39.3mmLug-to-lug:47.2mmCrystalSapphire crystalCrystal CoatingAnti-reflective coating on inner surfaceLumiBriteLumibrite on hands and index(es)Band MaterialHorse SkinClaspThree-fold clasp with push button releaseDistance between lugs20mmOther DetailsWater Resistance10 barFeaturesSee-through & Screw case back UPC Does not apply Department Men Brand Seiko Type Wristwatch... Seiko Presage Sharp Edged Series Automatic Mechanical Watch SPB231J1 US*us Movement Caliber Number 6R35 Movement Type Automatic with manual winding Precision +25 to -15 seconds per day Power reserve Approx. 70 hours Jewels 24 Functions Stop second hand function Date display Case/Band Case Material Stainless steel (super hard coating) Case Size Thickness:11.1mm Diameter