Features:1USB Power Supply: The charging bank and computer charging head can be used for charging, and the household USB interface is available. The compact mini is just fine, and can be carried with you. 2Dual Use: This quick cooling and heating base can quickly cool and heat. In summer, a cold drink can refresh you at any time, and in winter, a warm brown sugar can warm your heart and nourish your stomach. 3One Key Operation: Simplify the complexity, turn on and say goodbye to the complexity, turn on free control with one key, and switch with one key. 4Efficient: The coaster is highly efficient in cooling. The chassis can be used all day without pressure. The large exhaust holes are designed to dissipate heat quickly and extend the service life. 511 to 68 : This pad can reach the maximum temperature of 68 and cool down to 11 . It's a good gift for family, girlfriend and children.Specification:Item Type: Cooling Heating CoasterMaterial: ABSGross Weight: 743g/26.2ozPower Supply Mode: USB power supplyRefrigeration Heating Plate Size: 100mm/3.9inProduct Size: 86x166mm/3.4x6.5inInput Voltage: 5VPower: 10WTemperature Range: 11 to 68 Package List:1 xCooling Heating Coaster1 x USB Cable1 x Manual