The Zoo Med Nano Ceramic Heat Emitter provides 24-hour warmth for all reptiles. This conveniently compact heat source screws into a standard porcelain incandescent socket and emits intense infrared heat that penetrates muscles and promotes activity.24-hour heat emitter for nano-sized terrariumsProvides intense heat with no lightLasts up to 5 yearsIdeal for small geckos, hatchling reptiles, amphibians or invertebrates (arachnids or tarantulas). 2-year manufacturer warranty.