Welcome to the store! 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 right and can be carried with you. 2Dual Use: This rapid cooling and heating base can quickly cool and heat. In summer, a cold drink can cool you down at any time, and in winter, a warm brown sugar can warm your heart and nourish your stomach. 3One-Touch Operation: Simplify the complexity, turn on and say goodbye to the complexity, turn on free control with one button, and switch with one button. 4Efficient: The coaster is very 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 a maximum temperature of 68 and cool down to 11 . It is a good gift for family, girlfriend and children. Item Type: Cooling and Heating Coaster Material: ABS Gross Weight: 743g/26.2oz Power Supply Mode: USB power supply Cooling and Heating Plate Size: 100mm/3.9in Product Size: 86x166mm/3.4x6.5in Input Voltage: 5V Power: 10W Temperature Range: 11 to 68 1 x Cooling and Heating Coaster 1 x USB Cable 1 x Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!