USB Powered Coffee Warmer Constant Temperature Coasters Cooling Heating USB Warmer Cooler for Milk Tea Coffee Mug White

[USB POWERED]: This coffee warmer is versatile with multiple power supply options including power bank, computer, and charging head, ensuring convenience wherever you go.
[UNIVERSAL COMPATIBILITY]: Specially designed to fit various types of cups such as glass, stainless steel, and ceramic. Simply place a lid over the mug to retain heat effectively.
[COOLING AND HEATING FUNCTION]: Enjoy the dual functionality of heating your beverages or cooling water in the summer. Switch between modes effortlessly with a single button.
[RAPID HEAT DISSIPATION]: Equipped with large exhaust holes, this mug warmer efficiently dispels heat, extending its durability for all-day use without any hassle.
[GREAT GIFT FOR ALL]: Keep your favorite beverages warm throughout the day with this coffee warmer, making it an ideal gift for your loved ones on special occasions like Valentine's day, Thanksgiving, and Christmas.