【Auto-off System】10 Minutes Massage Timer to avoid overuse and fall asleep during massage.This electric cordless vibration knee massage provides sufficient heat and reduce for those suffering from rheumatic diseases/muscle soreness/joint discomfort/joint swelling/Arthritis/chronic knee pain/meniscal tear to make it comfortable. 【Vibration & Heating Mode】3 levels of vibration electric knee massager offer customized muscle relaxation for your knee, helps to knee pain ease and make it more comfortable. 【Easy to Use】Large LED touch screen, clearly visible and easy to operate.3 optional heating levels to adjust the temperature range from 107 °F to 113 °F. Theknee heating pad massage can do work for knees helps a lot, especially for bad weather because it really reduced the discomfort and kept warm.