Features: 1. Made of high quality carbon fiber heating material, sturdy, durable and long service life. 2. Safe and easy to use, can be sewing onto any cloth or seat cover. 3. Convenient to power, just connect it to USB port of power bank, or power adapter of 5V 2A. 4. The heating pad is foldable and not easy to deform. Easy to clean and can be washed with water. 5. Widely used for warming shoulder, neck, waist, back, abdomen and cushion or pet bed. Specification: Condition: 100% Brand New Item Type: Electric Heater Pad Model: 3515 Material: Carbon Fiber Heating Material Color: As Pictures Shown Input: 5V, 2A Power: 8W Switch: 3 Mode Adjustable Temperature Application: Waist, Pet, Cushion, Abdomen, etc Size: 35x15cm/13.78x5.91inch(Approx.) How to Use: 1：The switch can not open 2：Can turn it on, but it will automatically turn it off 3：The switch can be turned on, but the temperature cannot be adjusted. If it appears below the mid-range, it will automatically turn off So you must use real 5V2A output charger or power bank How much heating time mainly depends on the actual capacity of the charging treasure, after testing the true capacity of 10,000 mAh charging treasure, high-grade: 4 hours, medium: 7 hours, low: 10 hours, the above is about plus or minus 10 minutes of error Washing Instruction: Take out power bank, add neutral detergent to wash by hand, do not forcefully knead or beat, will wash clothes natural ventilation dry before use Package List: 1 x USB Electric Heater Pad 1 x Manual Note: 1. The power of the heating cloth is about 8.5W. Please plug it in with the output port of 2.1A. 2. If not used for a long time, please do not access to the power bank. 3. Do not use high temperature water or strong acid detergent. 4. Do not use electricity in wet clothes. Please turn off the power and stop using it. 5. The use time depends on the capacity of the power bank. 6. Do not allow use by persons unable to care for themselves, infants or persons not sensitive to heat. 7. Do not needle scratch heating cloth, no one indoor rigorous electrification use. 8. Do not use it in wet condition. Dry it before use .