Function at back: Four different kinds of massage modes: knead, shiatsu, knock and knead-knock at the same time Six wheels driven at back which will be traveled up & down to massage your neck, shoulder, back and waist to keep relaxed. Knock are set at the cushion and calf with the plywood-kneading massage which will make your body more relax The back can be laid down at the angle of 170 degree while the calf can be lift at the angle of 90 degree Auto timing functions for 5. 15 and 25mins (under the normal usage) Three working time for one coin can be chosen . All the functions is controlled by the microcomputer Equipped the swivel wheels which can be flexible to remove the chair Coin table can accept many kinds of coins, but the coin size must meet the following data: Diameter 1.8-3.0cm & the thickness is 1.2-3.0mm round coin. three operation timing ions, such as 3.5.10min for one coin or 5.10.15mins for one coin. It's up to u One carton for package: 115*80*76cm GW: 90KG NW: 78KG Power Supply: 110-120V or 220-240V, 50-60HZ, 180W