Zilla (3 Pack) Day Blue Light Incandescent Bulb for Reptiles Watt: 75 Watts Pack of Three Day Blue Light Incandescent Bulb for Reptiles Watt: 75 Watts Provides necessary daylight that is less intense than bright white Blue light hue brings out colors and gives a unique appearance versus white light Simulates the daylight sun which is necessary for reptiles to regulate their body temperature Heavy-duty filaments yield hours of performance