It is a new style design, use 4 AA batteries,also can use adapotor when you at home
It has 4 different types of airbag massage program, to provide effective massage
Vibration massage help to ease tensed muscles and improve circulation in your head and neck
Heating function help to further enhance circulation and provide instant relief from aches and strain
Relaxation music helps you to relax
Timing function offers you the massage session at 5,10 or 15 minutes according to your preference