describe:1. Heating: The graphene heating chip can quickly heat up within 5-15 seconds. Then set the temperature to one of the three levels provided.2. Adjustable: Short press after startup to adjust the temperature. Green light is about 38, blue light is about 45, and red light is about 60.3.USB: The included USB cable powers the cushion, especially suitable for office chairs. You can also use a mobile power supply or computer to provide 5V power.4. Control: When the heat reaches a certain temperature, the power is automatically adjusted to keep the temperature constant for a certain period of time.5. Durable: The heated seat cushion is made of soft material and is durable. Non-slip fabric on the bottom makes the accessory very stable.Specification:Materials: Graphene, electrical components, fabricsDimensions: 45 x 45 x 3.5 cmWeight: 260gPackage includes:1 heating pad.1x USB cable 1 mBatteries not included