OS-Pro 4D Encore is a 4D adjustable massage chair with a 52 Inch SL-track.  "A demand, as by applause, for a repetition of a song, act, etc.". Relax and Rejuvenate over and over again with the OS-Pro 4D Encore.   The Encore massage chair comes furnished with Human Hand Quad Style Massage Rollers, Automatic Leg rest Extension, Air Pressure Massage, Versatile Massage Techniques, and Intelligent Voice Control.