Tens Ems Machine Unit Electrical Massager Pulse Muscle Stimulator Back Therapy P Tens EMS Machine Unit Electrical Massager Pulse Muscle Stimulator Back Therapy Pain Relief with 4 Electrode PatchesFeature:1. The application of digital technology for comprehensive physiotherapy ensures the accuracy and efficacy of physiotherapy.2. Equipped with large LCD screen, which includes intensity, function, mode, physiotherapy, time, body meridian acupoint map, etc.3. Lightweight and portable, you can easily put it in your bag and use it whenever you want.Specification:Material: ABSPower Supply Mode: 3 AAA batteries (no included battery)Applicable Parts: Shoulder, neck, waist, back, legs, arms, feet, etc.Function: Dredge the whole body, improve cervical spondylosis, improve lumbar muscle strain, relieve body achesPackage List:1 x Muscle Stimulator (no included battery)4 x Electrode Patches2 x Electrode Wire1 x ManualNote:(1) During treatment, if you want to change the physiotherapy mode, the intensitywill be automatically reduced to 0 level, and you can readjust the appropriate intensity at this time.(2) During the course of treatment, if you want to change the location of the physical therapy, that is, change the electrode position, you should first press the power button, then turn off the machine and then follow the above steps.(3) If the physical therapy stops, please press the power button first, and then remove the electrodes after shutting down.(4) Remove the electrode from the host, please pull the plug part, do not pull the wire.(5) The battery should be taken out if it is not used for a long time.Please allow 1-3cm differences due to manual measurement, thanks.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.