I know there are different opions which I respect about using incandescent lights. But I personally have had cheap lights fuse and on a couple of occasions due to power surges explode . So I chose to use toughened halogen lights this one provides heat light and infared light and I personally have never had a problem. I must add not all reptile lights are designed equally. I have had other brands types same wattage that where rubbish at providing my desired temp . Without attaching them to the chameleon lol.