Brand : Seiko Model No. : SSF001J1 Series : Prospex Master Series Case diameter : 48.5 mm Case thickness :15 mm Water resistant : Divers watch 200 meters/20 ATM/20 BARi Case material : Titanium Case back : Screw case back Glass material: Sapphire crystal Strap material: Titanium Clasp : Fold over with double push buttoni Calendar : Day and Date Movement : Solar (Powered by the light) Caliber No. : : 8X53 Glass material: Sapphire Crystal with Anti-Reflective Coated Dial color :Blue LumibriteHands and Markers Power Reserve Approximately 6 months Remark World time function (40 Timezone) Dual-Time display with 24 hours indication Chronograph up to 24 hours in 1/5 second Split time measurement Power reserve approximately 6 months Accuracy: +/-15 seconds per month Screw case back Three -fold clasp with push button release with secure lock Limited Edition Elite Prospex Marinemaster of 1,500 pcs