No more freezing or cold hands will help you type faster, be more consistent or react faster when playing video games or working. Envavo keeps keyboard hands warm without heating the keyboard. Heatbuff sits just above the keyboard, where it will emit infrared short waves directed at the user’s hands. You will only feel the heat if your hands are already cold. This infrared technology will only heat your hands when cold, keeping your hands at a perfect room temperature. The device can maintain a temperature between 68°F and 86°F, without heating up the keyboard or the unit itself.