Specifications:(Type 1) Battery Capacity : 5000 mah Full Charging Time : 3 hours Voltage : 5V Current : 1200-1500MABody care areas: knee pads 3 Heating Modes 3 Vibration Modes     Features  1 . The device can improve the muscle pain on the knees in a short time by transferring the thermal energy from built-in warm conduction and frequency vibration to the depth of knees with no side-effect 2 . The thermal energy from the built-in powerful heater can penetratele heat into the depth of knees to improve the symptoms . 3 . High-frequency vibration massage will release the fatigue 4 . The temperature is adjustable via High / Middle / Low levels by operating the temperature controller , which can keep at a certain temperature after a long of working .     Type 2  1. When using USB to plug into the USB port to get power, the output is about 5V/DC:     The highest (red): the temperature is 50 & 8451;, high temperature, can be used for a long time;     Medium (white): The temperature is 45°C, warm and can be used for a long time;     Lowest (blue): The temperature is 40°C, neither too cold nor too hot, and can be used for a long time.     PS: If you connect it to a power bank with an output current higher than 500mA, the temperature may be higher than the above.  2. When using the adapter, the fixed output is 7.9V/DC:     The highest (red): the temperature is 65 & 8451;, high temperature, the recommended use time is 10 minutes;     Medium (white): The temperature is 55°C, which is relatively hot, and the recommended use time is 30 minutes;     Lowest (blue): Temperature 45& 8451;, warm and can be used for a long time.  3. The USB cable is 2 meters long;  4. Size of mesh bag: 18*13.5cm (can hold moxibustion bag, ice pack, etc.)     Features  1. Built-in mesh bag, which can be put in an ice pack for cold compress, or a moxa bag for moxibustion;  2. Adjustable and fixed in place, two bifurcated strap design, hook and loop closure, can also be used for calf, thigh, arm to relieve muscle soreness and cramps;  3. 1 button control and 3 heat settings, very easy to operate, can control the heating temperature and time;  4. The USB cable is for portable use and can be plugged into a power supply with a USB port, which is easy to use;  5. This electric heating pad is portable and easy to put in a suitcase or handbag.