Solar Watches for Men, JIGE Solar Powered Quartz Watch 2 Display Multifunctional Sports Watch (Black) Solar powered, the solar panel can supply sunlight/light power to watch for work, especially for outdoor activities. Without sun or light, the power supply come from the battery. Waterproof sports watch: 50 meters waterproof 2 display ways: Digital and Analog, you can set two difference time zones. And can set 12/24H format selectable, Auto Calendar Multifunctional Sports Watch: Display hour, minute second month day and week; also 1/100 second Chronograph/Stopwatch with Split functions; Snooze Alarm; EL Backlight 3s for night reading 2 year warranty from JIGE