1. HEIGHT DETECT   Detect the height of upper body before auto massage function to  massage correct position refer to user’s shoulder area.
2. ROLLER BALANCE  The rollers auto balance into horizontal level in any time to ensure comfortable massage.
3. PARTIAL MASSAGE  The rollers performed in any distance by the button of “up and down” to realise partial massage. 
4. SEAT AIR MASSAGE Adopt twin air bags which can practice whole body swaying from right to left, up and down etc.
5. MECHANISM OVER-TOP PREVENTION DESIGN
Under software detecting and hardware protecting, the mechanism be prevented from over-top action.
6. HIGH COMFORTABLE MASSAGE LEVEL 
The metal mechanism in tender design, soft, gentle but strong.