Relax Pro Massage chair equipped with advance massage technology: ~ 3D Electronic Body Scanning ~Heated back est and seat ~build-in CD player with LCD display ~Music Synchronization with speakers and additional earphone ~Vibration ~Whisper quiet motors (Soundproof design) ~Various actions of kneading, tapping, thumb-pressing, knocking and kneading-flapping. With Relax Pro massage chair, you can melts away your tension, loosen tight and stiff muscles, relieve back pain and stress!