Features: Adopting soft fabric with built in insulation fiber heating material, comfortable and wear-resistant, durable for use. You can directly put it into your jackets, vests and other clothes for warming and heat it by using 5V 2A power source, such as computer, power adapter or power bank(Not included). Foldable and water resistant to a certain degree, heating evenly, washable, but do not immerse it in water for long time.(The cloth is glued together, the long-term immersion is afraid of affecting the adhesive degree of glue.) Lightweight and portable, convenient to take with for outdoor camping or other activities on winters. Also applicable to the people who are afraid of coldness, and they will do not fear of winter any more with it. 3 temperature adjusting modes and 30min timing mode for you to set, very practical. Great application value both for outdoors and indoors. Specification: Condition: 100% Brand New Material: Polyester + Metal Fiber Color: Black Power: 8.5W Power Requirements: 5V 2A Modes: High: About 55℃; Middle: About 42℃; Low: About 31℃; 30min Timing( The temperature data is just for reference, it will vary slightly in different environments) Cloth Size(L * W): Approx. 17.5 * 10cm / 6.9 * 3.9in Weight: Approx. 69g Packing List: 1 x Electric Heating Pad(The power bank is not included) Use Method: First press the button after power on the pad, and it start to work at high temperature mode, red light is on and 100% voltage output, when you secondly press button, it turns to the middle temperature mode, orange light is on with 85% voltage output, it will turn to low temperature mode and turn on blue light once you press button again, outputting 70% voltage. It will turn off if you give a fourth pressing. 30min Timing Method: Pressing the button for 3 seconds when it is on, which means it start the 30min timing mode. And the temperature indicator will flash. Cautions: Three kinds of people are not suitable to use it: babies, the people who are not sensitive to the heat or unable to care for themselves. Do not let knife touch pad, and do not power it on when you are not using it or nobody indoor. Do not use it in humid environment and please dry it up if it suffers moisture invasion. It must not exceed the rated power supply, and also can not be directly connected to 220V power supply.