Calibre 8700 Collection. Perpetual Calendar Automatically Adjusts for Odd and Even Months and Leap Years through 2100. Eco-Drive Technology - Charges in Sunlight or Indoors - No Batteries to Change. Blue Dial. When Fully Charged has a 500 Day Power Reserve. Solid Stainless Steel Case and Bracelet. Push-button Deployment Clasp. 12/24 Hour Time. Day and Date display. When in calendar mode, second hand points to the month on the inner bezel. Dual Time. Daily Alarm. Low Charge Indicator & Time Reset Advisory in the Event it Ever Needs Charging. Screw-Back Case. Non-reflective scratch-resistant mineral crystal. Water resistant to 100m. Case measures 38mm wide by 10mm thick.