1.Product massage knee design, key operation, easy to use; 2.The product can be used to massage knees, legs and arms; 3.The product design has the function of infrared hot compress to remove the damp and cold of joints; 4.Air bag and vibration function mix two levels of strength to make the massage part fully stressed and squeezed; 5.Timing massage function and rechargeable, wireless operation; 6.There are three kinds of automatic massage modes with adjustable strength; 7.Convex point design of massage part, anti-skid and breathable. Gift Box Size: 48*22*22.5cm Carton Size:70*50*46.5cm PCS/CTN:6pcs N/W-G/W:19kgs-21kgs 1x20`GP:1032pcs; 1x40'GP:2136cs; Technical Parameter: Working voltage: DC12.6Vã?? Rated power: 18W lBattery capacity: 2000mAh lMassage time: 15/20/25/30mins. lHeating temp.: 45-55C.