Efficient and Convenient: The USB Heating Coaster is designed to keep your beverages warm and at the perfect temperature for an extended period. With three temperature settings, it accommodates various cup sizes and materials, ensuring your drink stays warm and enjoyable. Auto Shut Off Function: This coffee warmer features an automatic shut off function after 4 hours of operation, providing peace of mind and safety. You don't have to worry about accidentally leaving it on and wasting energy. Safe and Durable: Crafted with ABS material, this cup warmer is heat- and fire-resistant, ensuring safe use. The spill-proof design adds an extra layer of protection, preventing accidents and damage to your belongings. Versatile and Stylish: Perfect for home or office use, this USB-powered mug warmer is a great addition to your workspace. Its compact size and lightweight design make it portable and easy to carry. You can use it anywhere you have access to a USB port. Ideal Gift Choice: Show your care and thoughtfulness by gifting this mug warmer to your loved ones on special occasions. It is a practical and stylish gift for coffee or tea lovers, moms, dads, spouses, and more. They will appreciate the convenience and functionality it brings to their daily routine. Product name: USB heating coaster Material: ABS Color: white green Rated voltage/frequency: 220V-50Hz Rated power: 20W Gear position: three-speed adjustment Heating area: 8*8cm/ 3.15 * 3.15 inch Color box specifications: 12*2.5*14cm/ 4.72 * 0.98 * 5.51 inch List: 1pcs* coaster, 1* USB cable Notice: Please understand that color deviation may vary due to different monitor settings. Due to manual measurement, there will be some errors, which is a normal phenomenon. If you encounter problems, please inform us at the first time, we will give you the best service and solve the problem at the first time.