SINTECHNO Hand Crank and Solar Rechargeable Power Emergency Camping Lantern This portable lantern uses seven white bright LEDs and powered by built-in rechargeable battery Operating Modes: 1 Bright; 2 Brighter; 3 Brightest; 4 Turn off It can be fully charged by built-in 028 Watt solar panel With a minute of hand crank, the light can last for 10 minutes Operating time: work continuously for 3~6 hours after fully charged