Brand Casio Model No. MQ-24-9ELDF Series Standard Gender Pria Case diameter 35 mm Case thickness 7.5 mm Water resistant Yes Case material Plastic/Resin Case back Screw case back Glass material Resin Glass/Spherical Glass Strap material Rubber/Silicon/Resin/Karet Clasp Buckle Movement Quartz Weight 19g Accuracy 20 seconds per month Approx Battery Life 2 years on SR621SW