Exo Terra Sun-Glo Basking Infrared Spot Lamp, 100-Watt/120-Volt (4 Pack) Pack of 4 Exo Terra Sun-Glo Basking Infrared Spot Lamp, 100-Watt/120-Volt 35 percent increase of light and heat in the beam Increases ambient air temperature; Creates a basking area for thermoregulation Stimulates breeding behavior through UVA rays S25 bulb; Can be combined with Night Glo or Heat Glo bulbs for 24-hour cycle