Electric heating knee massager, knee joint hot compress physiotherapy device description: Size: One size; Rated voltage: 7.4V; Battery capacity: 1800mah; Charging current: 1A; Power: 5W; Net weight: 260g; Temperature control range: 40-60 degrees; Body care parts: knee pads, shoulder pads, leggings, heating and warmth; Material fabric: high-grade shallow water fabric; Controller gear: 5 gears; Control line length: 33CM; Item #: 8669; Color classification: Gray one size; Specification: Single heating English (without shoulder strap); Whether it is intelligent temperature control: yes; Product type: Health care;