Human power generator: It is mainly used in rechargeable electric torch, handy charger, rechargeable radio and so on. Specification: 1. Speed: 1000-3000 rpm 2. Output voltage: 2-10 V 3. Output current: 0.2-2 A 4. Output power: 0.5-6 W 5. Size: Diameter 45mm, Thickness: 12mm(without gear), 18.5mm(with small gear), 23.5mm(with big gear)