Description: This is DIY Kits, with case, but you need assembly its by yourself. Understand the growth of gear transmission conversion and The generation principle of electric energy, training hands-on brain ability, it is suitable for use in school experiments Both sides of product have a protective layer, the protective layer should be torn and before assembled. Turn the handle fast by hand, it can be issued 6V voltage and the LED will light up. No instructions supply! Specification: Step 1: First lock the first and second pieces with a 25 mm long copper post. Step 2: Lock the 3rd piece and the 2nd piece together: The third step: use the thin wire to out the two poles of the motor. If necessary, solder the contacts with a soldering iron to make the contact good. If there is no soldering iron, then tie it up. Step 4: Place the connected generator motor on the acrylic bracket, then clamp the motor with the 4th and 5th pieces: Step 5: Pass the 2 leads of the motor through the small hole next to it and wrap it around the left and right 2 screws: Step 6: copper columns of 15 mm in length Step 7: Fix 1 resistor and 2 LEDs on the 3 copper posts. The resistors are not connected with polarity. The 2 LEDs are divided into polarities. The long legs of one LED are connected to the short legs of another LED. The remaining 2 feet are also one long and one short. After connecting, wrap the pin around the screw and lock it. In this way, whether it is a SF pin shake motor or a counterclockwise shake motor, there will be an LED light. Package Includes: 1 Piece Hand Crank Generator 1 Set Enclosure group