USB Model (10W) Constant temperature heating at 55°C to keep your drinks warm for longer. Gravityactivated design with no on/off switch for convenient use. Automatically activates heating when the cup weight is 300g or more. For cups weighing less than 300g, heating can be activated by pressing down. Note: Some USB models may not have indicator lights due to production batch variations, but functionality remains unaffected. European Standard Model (16W) Three adjustable temperature settings: Red: 65°C Purple: 55°C Blue: 45°C Compatible with various cup materials including paper, ceramic, stainless steel, and glass. Additional Information Please allow a 1–3 cm size variation due to manual measurement. The USB model is designed for cups with a minimum weight of 300g to ensure proper heating performance. Practical Uses Keep coffee, tea, or hot chocolate warm on your office desk while you work. Maintain the ideal drinking temperature for your beverages when studying or reading at home. Suitable for use in the kitchen or dining area to keep drinks warm during family meals or gatherings.