Features 1、USB 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. 2、Dual 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. 3、One 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. 4、Efficient: 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. 5、11 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. Specifications Item Type: Cooling Heating Coaster Material: ABS Gross Weight: 743g/26.2oz Power Supply Mode: USB power supply Refrigeration Heating Plate Size: 100mm/3.9in Product Size: 86x166mm/3.4x6.5in Input Voltage: 5V Power: 10W Temperature Range: 11℃ to 68 ℃ Package List 1 x Cooling Heating Coaster 1 x USB Cable 1 x Manual