Efficient light output The interior of the heat lamp is coated with a heat lamp light coating to maximize light usage for reptile heating. Protective design The lamp prevents pets from directly touching the bulb by maintaining a safe distance and reducing burn risk. The lamp holder is designed to resist breakage when heated to 400 degrees and is suitable for long-term operation in very humid environments. Simulated sunlight Delivers the full spectrum of sunlight to keep reptiles warm, and includes UVA to stimulate appetite as well as UVB to promote vitamin D3 synthesis and calcium absorption. Compatible with multiple bulbs Fits E27 lamp holders and supports up to 100W. Suitable for UVA, UVB, energy-saving lamps, night lights, heating lamps, ceramic lamps, etc. Use scenarios - In a reptile terrarium to provide basking heat and UV exposure during daytime. - In humid or tropical vivariums where durable, long-term operation is required. - In enclosures using UVA, UVB, energy-saving lamps, or other bulb types up to 100W with an E27 holder.