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Smart Electric Heating Coaster with 3-Level Heat Settings USB Mug Warmer for Your Desk – Keep Your Coffee Hot All Day!Introducing the ultimate USB Mug Warmer, designed to keep your coffee, tea, or hot chocolate at a perfect 55°C (131°F) throughout the day. Whether you're working, studying, or just relaxing, this smart electric heating coaster ensures your drink stays warm and enjoyable—sip after sip. Key Features: ✅ 3-Level Heat Settings – Customize your heating experience with three adjustable temperature modes for personalized comfort.✅ Constant Temperature Control – Maintains a consistent heat at 55°C, so your beverage never goes cold.✅ USB Powered Convenience – Simply plug into your laptop, power bank, or USB adapter for hassle-free, energy-efficient operation.✅ Sleek, Smart Design – Compact and stylish design fits seamlessly on your desk or nightstand and works with most standard coffee cups and mugs.✅ Perfect for Office or Home Use – A must-have for coffee lovers, students, remote workers, and anyone who enjoys warm drinks throughout the day. Keep your coffee or tea at the perfect temperature with our Smart Coffee Cup Warmers. With three temperature settings, it's suitable for wide applications. Safety and energy conservation features make it a must-have. It features a USB interface for convenience and is available in multiple colors. Specifications: Name: Coffee Mug Heaters Material: ABS+Electronic Components Product Size: about 11.2cm/4.4in Diameter Temperature Range: Three levels/55 degrees/65 degrees/75 degrees Charging Method: USB plug-in Rating: 20W Voltage/Frequency Rating: 220V/50Hz Packing List: 1 Set of Coffee Mug Heater      ..