Blue Heat Lamp63mm; 60W. It may produce UVA light source which focusing reflective coating required by the reptile. The addition of nitrogen into glass bulb may prolonge filameny life. The functions of UVA light source is natural sunlight spectrum. It may provide heat basked temperature in reptile environment. reptile pet may increase the temperature on or under skin int the comfortable points, but also create the temperature difference to the surroundings; UVA light source is helpful to improve reptile appetite and digest food. te restoring of natural spectrum may promote normal metabolism of reptiles. efficient output of daytime spectrum. the reflecting layer containing neodymium effectively increases reptile pet pigment. generate a large quantity of UVA ray and promote normal activivties of reptile pet. suitable to daytime use.