... programme automatically (FM:76-108MHZ) Crank dynamo Alarm High power generation efficiency : 1). Hand-turn the crank ... minutes ; 4).After the battery is full : 3 LED light 8 hours ; , or be able to ... charger, radio, lighting , alarms, etc. ; Easy to use , no need to change the battery , chargeed by hand ... Size & Weight : Size : 176 * 60 * 58mm Weight: 230g high brightness Flash light LED, FM Radio,Alarm