Double Value FDA cleared HealthmateForever TENS, best muscle stimulator for Pain Management, ABS Toning Belt System: Ab and Back Belt + Plus-6AB massager device, powered by lithium rechargeable battery, Large LCD backlit display, battery level indicator, auto shut off timer, two outputs with independent intensity control, sports injury recovery, sore muscle relaxation, muscle excercises, workout...(Patent design in USA, Lifetime warranty) Double value: The whole system is not limited to application at the Ab or back, but Full Body Application!!! (100% Quality Guarantee, Lifetime Warranty)