Specifications: Valid offers pet daily required intake of long-wave UVA ultraviolet light. Promote appetite and help digestion and nutritionally balanced growth. Low-intensity UVB output can provide sufficient UVB irradiation tropical type reptiles, thus promote the growth of reptiles and increase vitality. You should change the heating lamp when you use it for one year. Type: Heating Lamp Material: Glass Power: 25W, 50W, 75W (Optional) Features: Full Spectrum, Long Using, Eco-friendly, Warming Light Size: 5cm x 5cm/1.97" x 1.97" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Heating Lamp Valid offers pet daily required intake of long-wave UVA ultraviolet light. Promote appetite and help digestion and nutritionally balanced growth. Low-intensity UVB output can provide sufficient UVB irradiation tropical type reptiles, thus promote the growth of reptiles and increase vitality. You should change the heating lamp when you use it for one year. This product is not only as good and cheap as other manufacturers' products, but also has its own unique advantages.