All reptiles generally need to bask in sunshine every day, at least for a few hours. UV-A light for their metabolism, mood regulation as well as for breeding. UV-B light helps their bones and other organs. Our reptile light bulbs provide extra warmth and light to mimic sunshine and produce UVA and UVB lights.This daylight bulb is with 97% UVA stimulate appetite and 3% UVB promote vitamin D3 synthesis, fully absorb calcium, and 3.0 UVB could provide adequate UVB radiation. It has obvious prevention and improvement effects on the phenomenon of turtle backs, as well as heating to help digestion.This full spectrum heat bulb is simple and easy to install, just screw it into a standard E27 screw base, used for wide variety of reptiles and amphibians, including turtles, lizards, bearded dragons, snakes, frogs, iguanas, tortoises, chuckwallas, etc.Multi-functional for Animals or Extra Lighting: Use anywhere, from projects in your office to automotive hobbies in the garage. Or use with any animal's cage, from snakes to fish and parakeets to frogs.ATTENTION: 1. Please turn on 3-5 hours per day, because long hours of high temperature work can easily reduce the lamp's lifetime; 2. Please do not turn on the lamps immediately after turning off, because the sudden arrival of the electric pulse with the high temperature lamps may directly burn the lamps; 3. Bulb's surface temperature is high when working, please do not use your hand to test the temperature, also please adjust the distance between the heat lamp and the pets.: 50WColour: SilverMaterial: glass + metalSize: 5 x 5 x 5cmPackage Contents:4 x 50W UVA UVB BulbsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.