Product Description RK-7801 Hot Selling Intelligent Boss Deluxe Massage Chair 1. Patented unique 3D massage 2. Zero gravity function 3. Armrest air pressure massage 4. Extendable/retractable leg-rest, It's suitable for people with different height. 5. Removable power box for easy checking and maintenance 6. Body height can be detected to adjust back travel length Unique function for RK-7801 Leather color for your choice