Powerful Pulse Massager - The TENS unit sent electrical current via the leads to the pads on your skin to help ease body pain, like back, knee, shoulder, neck, and elbow pain; improve sport injures, arthritis and sciatica; stimulate muscle, enhances blood circulation, ease tiredness, enhances immunity, improve sleep qualityDUAL CHANNEL PULSE MASSAGER - Small, safe pulse travels through two sets of electrode pads placed on your skin simultaneously (4 pads at a time), 15-20 minutes per session, not only do you get the benefits of pain relief, you can stimulate your muscles and improve your fitness as well12 PREPROGRAMMED MASSAGE MODES Tuina, acupuncture, shiatsu, rubbing, vibration, pinching, foot reflexology, ear kneading options help diminish the sensation of physical pain like sciatica, arthritic or inflamed discs/joints, stiff shoulders, lower back pain, stepping, etc for relieving body stress and pain, to be healthier and energeticVARIABLE INTENSITY AND TIMER -- 40 level of intensity allows you to fine-tune the pulse width and pulse rate which optimize sensitive control to relax your particular pain; A pre-programmed timer can set a predetermined duration from 10 up to 60 minsCOMPACT, PORTABILITY, BACKLIT SCREENPocket-sized, and dual-output design enable you to massage more body parts on the go or in the office; The digital LCD backlit feature makes the screen clear and easy to read; We offer you an 18-month warranty and risk-free within 30 days.