OBOVAY This Electric Massage Belt Is Equipped With Massage, Heating And Timing Functions, And Is Designed For Hot Pressure On The Front And Back Of The Waist. It Has Adjustable Tension And Is Very Suitable For People Who Stand For Long Periods Of Time. It Is A Muscle Massager, Back And Neck Massager, Electric Muscle Massager, Massage Machine, Professional Physical Therapy, Gym Tool, Christmas Gift (Without Battery)