EMS Pulse Electric Muscle Stimulator Back Neck Body Massager Tens Acupuncture Meridian Physiotherapy Digital Massage Tools Using micro-current pulses to massage the body can effectively dredge the meridians, promote blood circulation, quickly relax muscles, relieve muscle soreness, and reduce physical fatigue 6 massage modes, each massage mode has 10 adjustable intensity levels, fully meeting the actual needs of different groups of people. It promotes blood circulation, reduces physical fatigue and relieves muscle soreness 6-speed timing function: 5 minutes/10 minutes/15 minutes/20 minutes/25 minutes/30 minutes, you can set the most suitable massage time by yourself The text on the large LCD screen is clear at a glance, and the functions of the buttons are clear, even the elderly can use it easily The size of this massager is about the same as that of an Apple mobile phone, so it is easy to carry out and is suitable for business trips, travel, office and other occasions Power supply: DC4.5V, 3 AAA batteries (Please buy it yourself) Frequency: 1-330Hz Configuration: 1 drag 4 electrode lines (about 93cm) Number of patches: 4 pieces Host size: 13.5*6*1.8cm