1. Product material: ABS + airbag (TPU) + sandwich mesh 2. Product weight: 1616g 3. Battery capacity: 2500mAh 4. Timing function: 15min 5. Rated power: 0.8A/4W 6. Rated voltage: DC 3.7V 7. Working current: 200-750MA 8. Heating temperature: 45-55 degrees 9. Function: airbag pressing, hot compress massage, precise acupoint massage, vibration hot compress massage, can dispel cold and warm knees 10. Features: air pressure, vibration and hot compress massage, can relieve soreness and other effects on the calf, knee and thigh massage