... High power generation efficiency : 1). Hand-turn the crank dynamo 1 minute can light on 30 minutes more ; 2). can ... minutes ; 4).After the battery is full : 3 LED light 8 hours ; , or be able to listen to ... use , no need to change the battery , chargeed by hand turn on dynamo ; Chic styling , cute , feel good ; Size & ... Size : 176 * 60 * 58mm Weight: 230g high brightness Flash light LED, FM Radio,Alarm