Safe & Energy Saving-Your safety is our top priority, so this heated mouse pad hand warmer is designed with high temperature protection and dumping power-off function.Built in intelligent energy-saving chip, when temperature reaches the set value, the heated desk pad will automatically reduce the power to maintain a constant temperature and save power. Adjustable & Portable-This heated desk warmer has three levels of temperature 100, 120 and 140, you can adjust it to a comfortable temperature at will. After use, it can be folded very compactly and does not take up desktop space. Free Mouse Operation-The space of the desktop hand warmer is 20.5cm diameter and 16cm height. whether you are working or playing games, you can freely operate your mouse and enjoy 360 of warmth.