A mini USB warmer is a small, portable device designed to keep beverages like coffee, tea, or hot chocolate warm for extended periods. Powered by USB, it easily plugs into laptops, power banks, or any USB outlet, making it ideal for use at home, the office, or while traveling. Compact and lightweight, it typically features a flat heating surface to evenly warm cups or mugs, helping to maintain the perfect drinking temperature without the need to reheat.
