Electrical Muscle Stimulator for Back Relieving symptom for tighten shoulder, waist and back,the low frequency treatment is by rhythm and soft impetus.Muscle stimulations fat burning, muscle build, for fitness shape.Upgrade 8-point pad, more comprehensive and more balanced.Betterment of muscular paralysis.Build muscle, buile futness shape, keep fit.It's light and portable. You can do muscle training in office, bedroom, or any place you want, not just in gym.Specification:Material: ABS PlasticThe soft design of the patch with the skin perfect fit. The pad derive is odorlessand no harm to your skin.Just attach it to your body one time per day, easily achieve your exercise target by using daily time, convenient and practical.Arm Sticker: 205x60mm/8.07x2.36inchAbdominal Sticker: 195x193mm/7.68x7.60inchPackage Includes:As You Choose1 Piece Abdominal Toning Belt + 1 Piece Battery Holder1 Piece Arm Toning Belt + 1 Piece Battery HolderNote:Note: Use AAA Battery(not included)1. Not suitable for the men whose body has Device Aids, like heart pacemaker etc.2. Epilepsy or seizures sufferer do not use it.3. The person who just finished the surgical operation do not use it.4. No using when driving, or operating the machine.