Polarity. / Is a hand-cranked generator Features / maximum output voltage 15V of machine power generation hand-cranked! AT can experience changes in the direction of rotation of the handle to generate electricity using the exercise. / Code is integrated with the main body misconnections can be connected easily with clip alligator. / No for being. / grip has a unique configuration which it is easy to grasp. (varies with the rotation speed of the handle) output / maximum output voltage 15V, code / 1m alligator with clip body: 152 x 110 x 40mm, Code: 1m alligator clip with