This massage unit offers vibration massage and heating, can be used on electric recliners, office chairs, leisure chairs, massage beds, car cushions, etc. The massage system contains 8 vibration motors, 1 heating pad, 1 remote controller, and a power adapter.  The system is easy to install and has an independent power supply, which is ideal for DIY or re-upholstery project Installation instructions: This massage unit contains 4 sets of vibration motors and a heating pad, and the usual installation positions are as follows: Vibration motor set #1: Backrest, slightly lower than shoulder Vibration motor set #2: Waist Vibration motor set #3: Buttocks Vibration motor set #4: Legrest Heating pad: Waist/Seat Cushion How to fix the vibration motors:Dig a hole in the recliner's sponge, apply glue to both sides of the motor, stick it in the hole, and put a thin layer of sponge on the surface to cover the motor.   Features:  Eight vibration massage motors and 1 heating pad, offers vibration massage for 4 areas, heating for 1 area, ideal for relieving weary muscles Massage area can be turned on/off separately Three massage intensity options Five massage modes Timer selection: 5,10,15,20,25 minutes Power adapter included Individual control for different parts Specification:  Power: 12W Voltage: DC12V Weight: 0.7Kgs Package Includes: 8* Vibration Motors 1* Heating Pad  1* Remote Controller 1* Power Adapter