Simulate Ultraviolet Sunlight: Reptile UVB light, commonly known as calcium supplement lamp, can improve reptiles' appetite, mobility and reproductive behavior, help in the synthesis of vitamin D3 and calcium binding, promote healthy bone growth and calcium growth demand, lack of UVB can cause various diseases This UVB reptile bulb provides the necessary UVB rays for the tortoise to develop its shell, ideal for all desert reptiles, such as bearded dragon, lizard, snakes, iguanas, toads, etc., also suitable for succulents, helps plants achieve photosynthesis This compact fluorescent bulb desert terrarium lamp with spiral tube design increases light emitting area, high UVB output, no harmful UVC output for your pets. to change your UVB lamp in 12 months. Fluorescent bulbs do not provide enough heat Our professional reptile UVB lamp with durable smart chip ensures constant current to better protect the circuit board, provides brilliant brightness while saving much energy, 2-3 hours daily use is enough, easy to install, it just screw it into a standard E27 lamp holder Our UVB calcium supplement bulbs for lighting are made of high quality glass, heat resistant, sturdy and durable to use, they are perfect for your beloved pets. KEY FEATURES: 1) Helps simulate the environment of a desert natural, provides UVB needed for vitamin D production for optimal calcium metabolism, stimulates reproductive behavior in reptiles and amphibians 2) Spiral tube with large light area, energy saving, durable 3) Perfect UVB bulb for a wide variety of tropical and sub-tropical reptiles, also suitable for succulents 4) No harmful UVC, easy to install   Regards recommendation: 1 : This Reptile UVB 10.0 Lamp is ideal for tropical desert animals. 2: UVB 5.0 turtle bulb is suitable for amphibian reptiles in tropical rainforest and subtropical areas.   Features: White Color UVB Output: 10.0 Power of light source: 13W Voltage: 220V Lamp holder: Standard E27 screw base Size: 60*135mm   Packing list: 1 x UVB Desert Reptile Terrarium Lamp