1. Patented six-roller massage machine. 2. Hidden armrest. 3. Automatic body scan function. 4. Legrest can be extended within 8''. 5. Airbags in hidden armrest, seat and legrest: Surrounding air pressure squeezing massage on arms, seat, legs and feet. 6. Armrest and backrest can be controlled together, which guarantee the comfortable massage on arms when the backrest rise up or lie down. 7. Electric actuators to adjust the angle of backrest and legrest.