12V 6W Licht Generator Dynamo Motorisierte Fahrrad Friction Light Generator
(Bicycle Light Generator 12V 6W Dynamo Motorized Friction Head Rear Light Kit. 1 x Light Generator. 3) Two connection holes: one is 2.5V 0.5W connecting low power tail light; one is a 12V 5.5W connecting headlamp with high power.