Good hand feeling and high effciency. When no power, just hand pressing it Led dynamo torch,Eco-friendly,economical and safe. SPEC:Name: LED Dynamo TorchBulb Type: LEDWattage: 3 WColor: Black or greyWeight: 485gLighting Quantity: 30 and 60 pcsPower Supply: DynamoInput Voltage: 12VMaterial: ABS plasticBody Size: 44.5x29.5x36cmLife Span: 50,000hCertificate: CE&RoHS Dynamo 30led rechargeable working ...