��Li-Battery Capacity: 3000mAh ��DC 5V 2A 10W ��Charging time:4h,Using time:90mins ��Our Knee Massager includes Red Light Therapy, Heat Therapy, and vibration fuction to relax tight muscles and create temporary support for minor joint stiffness. ��4 Vibration modes support wonderful massager. ��4 Levels of Vibration Intensity can be selection ��Infrared Heating function 4 level of temperature.42��/47��/52��/57�� ��Dual-wavelength with 660nm and 850nm light for deep relief ��Memory working method ��10mins &15mins & 20mins timmer can be choose ��Our Knee massager is made of PU+ fabric,it soft to match any size of knee. ��Our massager is designed to ease your discomfort so you can enjoy walks, sports, hobbies, and time with loved ones. Whether you're relaxing, working at your desk, or even standing - our knee massager can be used wherever life takes you.