This tubular picture light bulb is a product of Major Brand. Its part number is AU/LG04T5 and average life span is 6000 hours. It's a T5 bulb with a miniature bi-pin base. Please Note: This light bulb emits Ultraviolet radiation. Avoid exposure. Ultraviolet radiation is harmful to the skin and the eyes and can cause serious skin burns and eye injury either from direct or reflected radiation. To reduce the risk of personal injury, install only in a fixture which provides adequate protection to area occupants. This bulb should not be used for illumination purposes.