Our torch is a kind of environmental protective and energy saving product, which can generate power by winding the crank, never needs battery replacing, and it can be used to charge for mobile phones. Product specifications: 1) ABS body. 2) Transparent Glass is made from PC engineering plastic. 3) Uses super illuminating diodes,(15,000 MCD) and it can be used for about 100,000 hours in normal situation . 4) Switches are imported from Japan or South Korea, body sides are made from silica gel, no odor, resist dust. 5) Built-in rechargeable Lithium battery LIR2450, 3.6V, 120mA.. 6) Under normal wear and tear, Lithium battery is allowed to recharge about 500 times. 7) Revolutionary self 杙owered technology never needs battery replacement. 8) Recharge over and over simply by winding the handle. 9) Generate power anywhere and anytime without power source.