* body material: plastic nylon + glass fiber.
* battery: 3.7 volt, 2200m/Ah. (Li-ion battery)
* power input: AC100 ~ 240 volt, 50/60Hz.
* power output: 5.0 volt, 1000m/Ah.
* charging time: 3.5 ~ 4.0 hours.
* active time: 2.5 hours.
* maximum output: 409 lumen.
* designed with brightness adjusting switch.
* come with 5 volt, 1A. charger and USB cable.
* overall length: 375 mmL.