Ra-Key, the Radiant Keyboard, Mouse and Desktop Heater Radiant heat warms the hands and the rest of you while working on the computer. Excellent for home or office. Compact, lightweight, and streamline style. 4 hour or 8 hour timer or constant on. Quiet operation (no fan). Energy saving 400 Watts, 110 Volts, 60 Hz. Sturdy construction and ETL certified conforming to UL standards. Tip-over protection for safety. Low profile to easily view your monitor.