. . . . 270-Day Power Reserve . . Eco-Drive Technology Charges in Sunlight or Indoors - No Batteries to Change Ever . . Perpetual Calendar Autuomatically Adjusts for Months with 30, 31, 28 or 29 Days (Leap Year) through 2100 . . Date . . 1/20 Second Chronograph Measures up to 60 Minutes . . 12/24 Hour Time . . Alarm . . Stainless Steel Case and Bracelet . . Low Charge Indicator and Time Reset Advisory (Second Hand will Move in 2-Second Increments if Watch Ever Needs to Be Charged) . . Fold-Over Push Button Safety Clasp . . 100 Meter Water Resistant . .