(3 Pack) Zilla Night Black Heat Incandescent Spot Bulb, 150-Watt Pack of Three 150 Watt Zilla Night Black Heat Incandescent Spot Bulbs Provides more focused ambient heat without disruptive visual light Gentle glow produces little visual light allows for viewing nocturnal habits and shy species activites Pinpointed light and heat allows reptiles to easily move away from the heat source and regulate their body temperatures Heavy-duty filaments yield hours of performance