Knee Massager with Heat and Vibration, Knee Heating Pad for Knee Knee Heating Massager Amazon.com: Fitnessentials Wireless Knee Massager & Heating Pad w Amazon.com: Knee Heating Pad Wireless Heating Knee Massager, Portable. Introducing our Knee Heating Massager, the perfect solution for joint physiotherapy and quick pain relief. This innovative device combines the power of hot compress and vibration massage to deliver effective results. Experience soothing warmth as the built in heating element gently warms your knee, providing comfort and relaxation to tired muscles. The hot compress helps promote blood circulation and eases stiffness, making it an ideal choice for individuals dealing with joint discomfort. Features: Battery capacity: 4000mah Third gear temperature: 45 degrees 55 degrees 65 degrees Three gear vibration Long strap length: 68cm Short strap length: 30cm Charging cable length: 100cm Working voltage: 5V Working current: 1550mA