... 3)power by hand crank and Solar light 4)2 light Modes: 6 LED / 3 LED Lighting 6LED dynamo camping light camping ... source of light.Can also be used as a hand dynamo for charging electronic devices, cell phone, PDA, MP4, etc.Perfect ... size : 18.5*8*8cmPower by solar light or hand crank, cranking 1 minute, continue lighting on about 20 minutescranking 20 ...