Brand: Casio Model No.: W-753-3AVDF Series: General Gender: Men's Case diameter: 42.4 mm Case thickness: 14.6 mm Water resistant: 100 Meters/10 ATM/10 BARi100 Meters/10 ATM/10 BAR Suitable for recreational surfing, swimming, snorkeling, sailing and water sports. Case material: Plastic/Resin Case back: Screw case back Glass material: Resin Glass/Spherical Glass Strap material: Rubber/Silicon/Resin/Karet Clasp: Bucklei Calendar: Perpetual CalendariPerpetual Calendar The watch is programmed to automatically adjust the date of the month for the varying lengths of months as well as leap years to the year 2100. Luminious / LumiBrite: No Movement: Quartz