Welcome to our store! This heating and cooling coaster is a versatile gadget that can be powered by both a charging bank, computer charging head, or household USB interface. It offers fast cooling and fast heating capabilities, allowing you to enjoy a refreshing cold drink in the summer and a warm beverage in the winter. The coaster features a simple one-button operation, making it easy to switch between cooling and heating modes. It is designed for reliable performance, with high-efficiency cooling and large exhaust holes for quick heat dissipation and a long service life. Compact and portable, this mini coaster is perfect for use at home, in the office, or even in a dormitory. It comes in a stylish white color and weighs approximately 520g. The coaster includes a USB cable, a manual, and an adapter for convenient use. Don't miss out on this fantastic product that is suitable for all seasons and makes a great gift for your family, friends, or children. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service. Enjoy the convenience and comfort this heating and cooling coaster brings to your daily life!