Product name: penis enlargement electronic pulse physical therapy<br />Material: rubber， metal， plastic<br />Power supply: 2 * AAA<br />3 v voltage: DC<br />Pulse output: MAX 100 v / 20 ma<br />Frequency: 2-100 hz<br />Pulse mode: 10 kinds of patterns<br />Color: black<br />Size: can adapt to all the size of the penis