The Medical Surgery Microscopy Bulb 64291 XIR 40W 22.8V G6.35 offers brilliant light, high output, and a constant color temperature. With no mercury content, it's both powerful and eco-friendly. Its features include dimmability and easy use, making it perfect for medical fiber optics and special luminaires. Upgrade to this halogen lamp for increased energy efficiency and up to 30% higher luminous efficacy compared to standard lamps