Wind 'N Go 7120 Dynamo Hand Crank Powered 3 LED Mini Flashlight; Red/Black Dynamo Hand Crank Powered 3 LED Mini Flashlight; Red/Black; Just wind it up, No batteries to replace; Operates on High (3 LEDs), Low (1 LED), or all 3 Blinking/Flashing Focused Lens Concentrates the beam of Light, 3 LEDs generate 10,000 MDCs; Wrist Strap; Glow in the Dark On/Off Button; Winding for one minute will give you 60 minutes of use on 1 LED or 20 minutes on 3 LEDs Fits in the Palm of your Hand, Small enough to fit in a purse, pocket, backpack, glove compartment or emergency kit; Water Resistant, Not Waterproof so do not submerge in liquid; Not intended for use in explosive atmospheres or locations Rechargeable 80mAh 3.6V Ni-MH Battery; Storage Temperature up to 70F; Shelf Life 1 to 2 years Unit Dimensions 3.2L x 1.9W x 1.5H inches, Weight 3 ounces; Packaged in Clamshell 4.875L x 7.25H x 1.5W, 4 ounces