HMC115 Turn any seat into a personalized comfort zone. This seat cushion massager can keep you comfortable even when you're driving in the car. Description ?5 massage motors massage neck、upper back、lower-back、left-thigh、right-thigh ?Optional heat provides greater relief for tired, sore muscles ?3 massage strengths: low、middle、high ?Easy-to-use hand control for customized massage selection ?AC home and 12-volt auto adapters ?Elastic straps easily secure Back Pleaser to seat ?Automatic safety shutoff feature ?Instruction manual, and adapters included