Heating tree stump 15W, 26 Deg. C.; 145x140x160. safety and constant temperature, efficiently resist coldness and low temperature. As for the reptile, amphibious pets and small pets, it may adjust the body temperature, simulate appetitie and promote metabolism and digestion. the magnetic eraser is equipped to eliminate magnetic field when heating. it is safer and more reliable than the ordinary heating line. it may be used to heat multiple cylidners which feed ciliatus and snake.