2 Thrive Reptile Ceramic Heat Emitter

these ceramic bulbs doesn't use light means normal day or night periods are not disturbed. Bought these bulbs but never used them. Only once did I try on one of the bulbs but it was a lot of watt then I was expecting so I quickly took it off. Boxes itself has some damage but the bulbs itself is in great condition. -shatter resistant ceramic-no light emitted; won't disturb normal day or night periods-increases terrarium ambient temperature-provides 24-hour heat source-lasts up to 20,000 hours-60 watts ideal for everyday use. finest materials and excellent craftsmanship ensure long-lasting durability.