Specific Information: Brand: LIPUDA (OEM available) Size: 242*50*79 mm Case material: ABS+PP Packge: 277*118*62 mm Weight: 286 g Color: blue, orange, yellow, green Output Load Voltage: 3.7 V Maximum output Current: 2600 mAh Maximum Output Power: 2.5 W Power generation: Charging & hand cranking Power Source: Built-in LIB Lamp Life of 50,000 H Switch Life 100,000 Times