Reptile heating rock 5W, 26 Deg. C.; 165x130x50. natural apperance. It is made of edible resin for durable and environmental properties. It facilitates digestion and provides appetite. Built in constant temperature chip in the all sealing electronic components control the surface temperature at 38+/-5 degree celcius. equip anti seaming power line. efficient heating and even distribution. promote the atural living habits of reptile pets.