Shiatsu Neck&Back Massage Cushion For Car Seat&Seating Furniture four functions:massage,kneading,seat vibration, heating 3 rolling modes:upper,lower,full back 2 kneading modes:rolling kneading,neck kneading the seat virbrating can be separately controllable full function remote control with 12V car adaptor a 15 minutes timer limits fix usage period for safty and reliability it will be automatic reset onces switch off