Material and Design: Infrared Bulb is made of explosionproof glass material to ensure its safe. It has a double tungsten filament that is resistant to high temperatures and oxidation, providing efficient heating. E27 Screw Mouth: Red Heat Lamp Bulb has an E27 base, known for its strong conductivity, good contact, and wide compatibility. Energy saving and environmentally friendly: Glass Lamp Bulb is rated at 100W and 220V, providing powerful infrared heat while also energy efficient. It has a service life of up to 5000 hours, making it an environmentally friendly choice. Fast Heating: The infrared heat provided by Basking Light Bulb heats up quickly and is evenly distributed over the surface area for efficient heating. Wide Application: Infrared Reptiles Heat Lamp Bulb is suitable for home treatment use and can also be used as a beauty body lamp. Specification: Rated voltage: 220V Rated power: 100W Size Chart: Length: 12.8cm/5.04inch Diameter: 9.5cm/3.74inch Package Includes: 1 Infrared Bulb Note: Please allow slightly errors 1-2cm differences due to manual measurement.