1.Output: DC 7.4V , 9W
2.battery voulme 2200mAh

3.One switch button, 4 intensity levels to choose
4.charging time for 2.5 hours, can use for 2 hours
5.Can be used for hands, arms, abdomen, waist and legs. With strong heating function, can warm up the body like joints and muscle tension, aches or pains
6.Auto timer 15mins setting