Features: 1) Five high frequency massage knead heads controlled by the microcomputer 2) Five optional massage manipulations 3) The massage force and rhythm has three levels for adjusting 4) Time setting can be selected between 15 minutes and 30 minutes 5) Single-side and double-side design (double-side has one side with bamboo mat) 6) Using 12V power supply ensures safe and reliable operation Technical parameters: 1) Input voltage: DC 12V 2) Output power: 12W Outer packing: 6pcs/master carton Carton dimensions: 74 x 48.3 x 43cm G.W.: (single side) 13.65kg; (double side) 17.25kg