About this item UVA+UVB FUNCTION: UVA light regulate reptile activity level, metablism, mood and breeding.UVB light can produce vitamin D3, which contributes to the health of bones and other organs. ADJUSTABLE TEMPERATURE&DIMMABLE: Turn the knob switch to adjust basking lamp brightness and temperature. You can also adjust the heat lamp head distance to meet your reptile pet needs at different times. REPLACEMENT UV BULBS: 2 pieces 50W UVA/UVB bulbs provided.The most common home use E27 screw base, easy to fix. SOLID CERAMIC SOCKET Ceramic lamp socket can resist constant high heat.Suitable for incandescent,fluorescent, UV bulbs, and ceramic heat emitters. FLEXIBLE&CONVENIENCE CLIP: Sturdy clip with 360 degree ratatable and flexible stainless steel stan.The clip is suitable for most tanks and aquariums. See more product details