The dynamo ZSFD-0907B is widely used for flashlight,lantern,portable electronic product and other hand-rotating dynamo products.the output detail of the dynamo is below: Rated Rotating Speed:2800 rpm DC Voltage Output:12v Rated Current Output:1000 mA Dimension:106mm(L)X51.5mm(W)X30mm(H). Normal packing methord for export.