Butterfly shape car and home massage pillow & Heating function 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 It can split into three parts(see chart).