"The 3rd generation Skyhawk redefines atomic timekeeping with radio controlled accuracy and Eco-Drive Technology. Radio signals are received both automatically and on-demand by the fully loaded Skyhawk A-T. Atomic Timekeeping wit Radio Controlled Accuracy Solar Powered - No need to change a battery World Time in 43 Cities 2 Alarms 1/100 Second Chronograph Measures up to 24 Hours 99 Minute Countdown Timer Perpetual Calendar Digital Display Light Water Resistant to 200 Meters (660 Feet) Greenwich Mean Time Display Rotating Slide Rule Bezel Stainless Steel Case and Bracelet with Black Ion Plating Non-Reflective Mineral Glass Crystal Power Reserve Indicator (180 Day Power Reserve when fully charged - 2.5 Year Power Reserve with Power Save Function - *150 Hours in Average Lighting to Acheive a full charge) Bracelet Features a Fold Over Clasp with Double Hidden Push Button Release 45mm Case Width (Approximately 1 3/4"")"