2 Channels TENS&Electric Muscle Stimulation Stimulation Device with 16 Modes and 20 Strength Levels Adjustable Pulse Massager Muscle Stimulator Features: Dual-Channel TENS&Electric Muscle Stimulation Device, Seperate operating A/B system, allows you to take treatments at 2 different parts of your body with independent intensity & mode. Perfect combination of different pulse signals will make you hace the true feeling of acupuncture, thumping, massage, cupping, massage, scraping, slimming. Total 20 intensities for you to choose, you can adjust it by yourself according to your demands. Relieve pain and preventing diseases, such as arthritis, muscle pain, bruising hematoma, low back pain, neck and shoulder pain, mouse hand, increase muscle explosiveness, increase muscle endurance, increase muscle dimension. Dedicated electrode patch, high current conductivity, smoother experience, no air bubbles on the paste layer, more even to the point, no tingling on the skin, just to give you a perfect massage experience. Ergonomic design, effectively solve the inconvenience of carrying a large massager, it can be used at work or in the gym or outdoors. You can adjust time from 10 to 60 minutes by press "T" button. Specification: Material: ABS Color: White Mode: 16 modes Strength levels: 0-20 Output frequency: 0~104Hz Input voltage: AC110-240V Adapter output voltage: 5V Working time: 0-60mins Output pulse width: 80uS Operating temperature: 5℃~40℃ (41℉~104℉) Powers supply: 200mAh Item size: 105 * 55 * 10mm Item weight: 58g Package size: 145 * 75 * 70mm Package weight: 335g Package list: 1 * Device  2 * Large Pads 2 * Small Pads 2 * Electrode Cables 1 * USB Cable 1 * User manual 1 * Acupuncture Point Chart 1 * Holder for Pads and wires