1.music massage, this chair could supply very comfortable massage action in accordance with rhythm. 2.U disk and hi-fi earphone installed, you could hear MP3 music when you enjoy the massage. 3.four massage balls inside the backrest, kneading taping and pressing from neck to waist 4.air masaage in calf and thigh position 5.five auto massage programs,easy and convenient to use 6.measuring the figure automatically with infrared rays 7.the angle of backrest and footrest is adjustable by electric motor 8.footrest stretch,retract to meet individual need, the length of it is adjustable 9.LCD screen remote control