Notable features: No batteries, charge instantly.Superiorities: Turns kinectic into electric energy for flashlight and mobile phone charger, Environmental protective, Energy saving, Easy carrying, Exquisite design and Excellent quality.Suitable for mobile phone, digital camera, personal stereo, MP3, etc. while meeting an emergency.Perfect for traveling, camping, mountain-climbing, housework maintenance power failure, on business, emergency, etc..(1) Dimension: 132 X 46 X42mm; Weight: 122g(2) Body Material: ABS;(3) Body sides: Silica gel, odorless, dustproof;(4) Super bright 3Leds (15,000MCD), lifespan 100000hrs;(5) Built-in rechargeable Lithium battery, 3.6V, 120Mah, allowed to recharge over 500time