Product size: 89.2 x 59.8 x 31mm

Bulb: 5 white LEDs

No need battery.  Wind up the handle clockwise at the speed of 3 circles per second till one minute, LED will work more than 20 minutes.

The flashlight can charge the mobile phone. Charge in less than 3 minutes, you get up to 2-8 minutes talk time r 30 minutes standby time