EMS micro-current massage: This tens machine for pain relief promotes muscle movement by mimicking a bionic micro current massage, releasing tight muscles, so as to achieve the effect of soothing muscles, effectively expel fatigue, and help you quickly restore vitality. 6 massage modes: This tens massager for back pain has 6 massage modes and 6 levels of massage intensity to meet your needs. You can choose the appropriate massage mode according to different states of the body to better relieve muscle fatigue and soreness. Easy to use: This intense portable pain reliever is simple to operate, small and portable, and convenient for full-body massage. You can enjoy a comfortable massage experience at home, office and travel, relax at any time and in a good state. Suitable for the whole body: The tens therapy machine is suitable for shoulders, back, hands, waist, legs and other parts. To meet the different massage needs of you and your family, with it, you will have a healthy, affordable, and save the cost of massage. High quality: This current pulse massager is powered by 2 AAA batteries with a battery capacity of 120mAh and a long service life.