The coffee cup warmer adopts ASB high temperature resistant shell, which is explosion-proof and high temperature resistant. The quality material will protect you from burns. With the concave plate design, the cups will be protected from accidental slipping and tipping. Plus, it has 3 temperature settings and is designed with an 8-hour auto shut-off, making it safe and easy to use. The Coffee Mug Warmer is a thoughtful and perfect gift for yourself, family, friends and co-workers. Specification: Name: Coffee Mug Warmer Coffee/Coffee Cup Warmer Material: ABS+metal+electronic components Size: about 130*117*23mm/5.12*4.61*0.91inch Net weight: about 120g Input voltage: 5V Input current: 2A Rated power: 10W Power mode: USB power supply Temperature range: 55/65/75 degrees Celsius Timing function: 8 hours automatic shutdown < p>Applicable cup size: suitable for cups whose bottom diameter is less than about 76mm / 2.99inch. Color: white / pink / green Heating time : it takes about 30 minutes to heat a cup of room temperature water up to 55 degrees Celsius. Packing list: Coffee cup warmer*1 USB Cable*1 Manual * 1 Notes: 1. Due to lighting effects and shooting angles, there is some color difference in the product, please understand. 2. Due to manual measurement, there is tolerance in the product size. Heat Insulation: Made of quality ABS material, the coffee cup warmer is high temperature resistant and explosion-proof. It is also heat-insulated to protect you from burns. Concave Plate Design: The coffee mug warmer has a concave plate design to prevent cups from accidentally slipping or tipping over. It can be used to warm the cup with size less than about 76mm / 2.99 inch in diameter in the bottom. Temperature Levels: The temperature level of the coffee cup warmer is 55, 65 and 75 degrees Celsius. The default temperature is 55 degrees Celsius when the cup warmer is turned on, and press again to set the temperature to 65 degrees Celsius, and press again to set the temperature to 75 degrees Celsius. It will be turned off with another press. Smart Coaster: The coffee cup warmer will turn off aromatically after 8 hours. It keeps drinks hot all day and makes a great gift for yourself, family, friends and co-workers.