Heating tree stump 5W, 26 Deg. C.; 135x115x120. 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 appetite 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 cylinders which feed ciliates and snake.