USB Power Supply: Conveniently powered via USB, this mug warmer can be plugged into your computer, laptop, or any USB port for easy use in the office or at home. Temperature Control: Maintain the perfect temperature for your tea, coffee, or hot chocolate with the heating pad coaster, ensuring your drink stays warm and enjoyable for longer. Compact and Portable: The compact design makes it easy to take with you wherever you go, whether you're working at your desk, studying in the library, or relaxing in the living room. Cartoon Original Wood Grain Design: Add a touch of whimsy to your workspace with the charming cartoon original wood grain design, which adds a playful element to your desk decor. Versatile Compatibility: Compatible with a variety of cup sizes and materials, including ceramic, glass, stainless steel, and more, making it suitable for all your favorite mugs and cups.