Description: 1.Comfortable vibration massage ease joint pain, muscle stiffness and joint swelling. 2.Ergonomic for the knee, shoulder and elbow design, can be fixed on any joints. 3.Rechargeable lithium-ion battery makes for complete portability, can provide on-the-go relief. 4.Selectable heat further releive knee joint, shoulder joint and elbow joint. 5.Heat Therapy, Magnetic therapy and Vibration Massage together work to promote comprehensive rehabilitation. 6.Auto programe for 5-minute, 10-minute, 15-minute. 7.Elastic neoprene material and adjustable straps fits different girths of legs or arms and maximizing comfort on skin.Fits girth of 18 inches or less. Specification: Color: black Rated voltage: 110v-240v Power: 12W Heating temperature: 45-60 degrees Temperature control range: 45-60 degrees Body care areas: knee pads, leg protectors, shoulder pads Product features: infrared, magnetic therapy, heating, vibration. Product selling point Portable, rechargeable Material fabric: Breathable Neoprene Controller gear position: three gear intelligent timing Function: 1.Relieve knee rheumatic arthritis 2.Accelerate muscle recovery 3.Alleviate muscle pain 4.Reduce heart rate 5.Increase flexibility 6.Improve circulation 7.Promote better sleep Package Included: 1* Knee massage machine 1* UK Plug/US Plug