Knee Massager Hot Compress Pain Relief Physiotherapy Device $ 109.20 Product information: Rated voltage: 3.7V Power: 5W Heating temperature: 45-50-55 Net weight: 790g Temperature control range: 45-55 Body care parts: knee pads Product function: airbag kneading, magnet irradiation, constant temperature hot compress, intelligent timing Material fabric: magic cloth Packing list: Knee massager*1