40 watt halogen ("Halopin" equivalent), G9 double-loop base miniature bulb (T4 type). Heat-resistant Capsylite base moulding. Length 1.8".

Product Details:

Energy Used: 40 watts; Type: T4 mini halogen; Base: G9 double loop; Length: 1.8"; Light Output: 500 lumens; Average Lifetime: 2,000 hours.