The size of this ceramic pet heat lamp is 5 * 5 cm / 1.97 * 1.97 inch, and the power is 25W. The product packaging quantity is of 3 pieces respectively. The packaging uses cotton swabs to protect the product. This pet solar heating lamp is a built-in full spectrum solar bulb (UVA + UVB). It can effectively provide reptiles and amphibians with daily sunshine and transfer temperature to your pets by heating. UVA (Long Wave Black Spot Effect Ultraviolet) light can promote appetite and breeding ability of pets. animals, and UVB light (Medium Wave Erythema Effect Ultraviolet Light) can promote vitamin D3 synthesis in animals. Vitamin D3 is essential for animals to absorb calcium and can avoid lack of calcium in animals. The lamp holder of this ceramic heating lamp adopts the standard E27 metal iron thread interface, the method Installation is simple and convenient, just screw it into the standard E27 thread socket. Note: Do not touch the bulb while heating to avoid burns. If it's for testing, you can feel the heat by bringing your hand closer to the lamp. It is recommended to use it with a thermometer.