1.WATERPROOF TEMPERED GLASS: The Self-Heating Coffee Mug with Lid is made of durable, waterproof tempered glass that is not only stylish but also easy to clean. This premium material ensures that the device stays in top condition even during daily use, making it a reliable and choice for any coffee lover or tea enthusiast. 2.SMART HEATED MUG KIT WITH WIRELESS CHARGER: Our cordless, rechargeable thermos keeps your beverage at an optimal temperature of approximately 131F (55C), ensuring that every sip is as warm as the first. Whether it's coffee, milk or ice cream, you can enjoy your favorite beverage at the ideal temperature for hours. 3.COMPACT AND LIGHTWEIGHT DESIGN: Whether you're at home, in the office or traveling, our heated coffee cup thermos is easy to carry. It's the perfect companion for keeping your drinks warm and charging your devices wherever you are. 4.WIRELESS CHARGING FUNCTION: Our innovative design is more than just an insulated mug, it has wireless charging capabilities. Charge your cell phone and other devices while enjoying your hot beverage, making it a convenient and efficient addition to your office or home devices.