Description: 2 IN 1: The coaster can be heated or cooled, one key control, switch between different modes, the green light is cooling, the red light is heating. SPACE SAVING: Small size, does not take up desktop space, very suitable for home, office, daily use. ABS MATERIAL: Mug Warmer is made of ABS and semiconductor material, which is resistant to high temperature and low temperature (2~6°C), can be refrigerated without adding ice, and is easy to use. Aluminum conduction , evenly dissipating heat from the air vents on both sides, efficient cooling/heating. NON SLIP: The Heating and Cooling Beverage has non slip feet on the bottom for stable placement, the curved handle is comfortable to hold, and the dustproof cover keeps dust out. Update Design:Cooler warmer cup with a power off protection chip and negative ions to refresh, improve the best quality and healthiest water source. Specification: Material: ABS + Stainless Steel Power: 10W Voltage: 5V Current: 2A Size Chart: Height: 15.5cm/6.10inch Bottom Width: 11cm/4.33inch Top Width: 9cm/3.54inch Package Includes: 1x Cool Warm Cup 1x USB Cable 1x Base Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!