Reptile Systems Infra Red Heat Lamps are manufactured in Europe with quality and performance in mind. Rated for 3,500 hours life (Approx 15 months based on 8 hour days). Ideal for heating a vivarium during the day and evening. A great source of heat for Ectothermic species. To be used with a thermostatic control system. Low visible light with high amount of heat. E27 (Edison screw) Fitting.