Temperature Control Smart Mug Warmer and Wireless Charger - great office gift that maintains your beverages at a constant 55 degree C temperature. The intelligent base is safe to touch even when heating the mug. This intelligent base recognizes metal foreign objects placed accidentally, and shuts power supply. Panel is waterproof & safe to touch even when switched on. The radio bottom cooling sheet dissipates heat at high temperature & accumulates heat when temperature is low. Wireless Coaster can be used as a normal Wireless Charger with regular mobile phones too!