Highlights: POWERFUL WEAPON for PAIN RELIEF: The Tens unit has multi preprogrammed massage modes, 20 levels of strength adjustable by increasing or decreasing steadily. People with back pain, inflamed or arthritic discs/ joints, shoulder tension and more injuries and disabilities would benefit from the units relaxation and release of tension. MULTI-FUNCTIONAL: Muscle Stimulator have 16 preprogrammed massage mode, 20 levels of strength adjustable by increasing or decreasing steadily. 8 PCS of self adhesive conductive reusable pads, replaceable self-adhesive conductive gel pads, not necessary to use any cream and gel together. POKET SIZE, PORTABLE AND CONVENIENT: Relax any time! Anywhere! Easy to carry, You can take it with you anywhere–to the gym, on a trip, or even to the office! Easily to USE and READING on LARGE LCD DISPLAY: Easily adjustable set massage mode, intensity, treatment time. Better view of the screen especially even at night or in the dark light. Built in timer from 10 to 60 minutes, default timer: 20 minutes. When time is due, it is automatically shut off. BUILT-in RECHARGEABLE LITHIUM BATTERY: Up to 10 hours of continuous use, It can be connected to wall unit or a normal USB port to charge. Don't worries about treatment interruption for dead AA batteries any more. With battery level indicator remind you charge timely. Pain Relief - Targets your pain precisely, Effective and Safe By placing the pads exactly at the site of the pain, you get fast relief, without having to digest potentially harmful or addictive prescription medicine. This TENS therapy has FDA, CE, ROHS certification, which is considered free of side effects, so it's safe to use it! Great weapon for Pain Relief User-friendly interface makes this product the most powerful weapon in your fight against chronic pain. Extremely effective for every unthinkable ache and pain located at almost any part of your body. Use it on your wrists, hands, shoulders, elbows / joints, back, shoulders, calves, knees and so on. How to choose 16 modes: 1. The "M" cycles through the 6 big modes, the silver middle button allows choices (from 2 to 4 varieties) within that mode, totally 16 small modes [ (1). Lateral palm kneading (2). Flat palm kneading (3). Crosscut fist kneading (4). Vertical fist kneading (5). Acupuncture (6). Moxibustion (7). Acupuncture kneading (8). Rubbing reduction (9). Tapping (10). Fibrillation massage (11). Lifting-pinching manipulation (12). Vibrating manipulation (13). Thai massage (14). Shiatsu (15) & (16). Sensitive Parts Massage Mode 1&2] 2. The "T" cycles through times from 10-60 minutes, and the "+ & -" change the pulse strength. Every time you change modes, the strength resets to the minimum for protect you. Notice Use the pads only on normal, healthy, clean and dry skin. Replace the pads after using 15-20 times Not suitable for pregnant women and hypertension patients What you will get: 1 x Tens unit controller 2 x Large pad 4 x Medium pad 2 x Small pad 2 x Electric wire (1/2 wire) 1 x USB cable & 1 x AC adapter (110V-240V)