MovementAutomatic YN84 movement from SII ToleranceTotally wound watch runs not less than 40 hours CrystalK1 Mineral Crystal LuminosityTritium Dial ColorSilver CrownPush/Pull BezelFixed Case Material316L Surgical Grade Stainless Steel Case Width45mm X 14mm Case BackEngraved case back Strap MaterialItalian Leather Strap Measurement23-mm Clasp TypeTang Buckle Water Resistance5 ATM water-resistant Other Features Numbered Limited Edition 3000 only Screw-in back with engraved serial number