A unique self-charging solar-power system ensures this watch will operate without the need for winding or replacing batteries. A single full charge will provide up to 10 months of battery life without further exposure to light. An array of features makes this versatile timepiece a great choice for travel, business or recreation. An LED light and Neo-Brite luminous hands and markers make it easy to read, even in total darkness. Time is displayed in both 12- and 24-hour formats and can be viewed both analog and digitally. The 48-city world time keeps you synchronized with locations around the globe. Five alarms alert you to important time throughout the day. A 1/100-second stopwatch and two countdown timers make it ideal for interval training that alternates between two paces. Full auto calendar is preprogrammed to 2099. Water-resistant to 100 meters. Case size: 2.05” x 1.83” x .54”.