The Ledvance led r80 100 36 degree p 8.5w 827 2700k e27 reflector lamp is the ideal replacement for your old R80 halogen lamp. It offers a number of advantages over traditional halogen lamps.- Quick, simple and safe replacement without rewiring- Design, dimensions, luminous flux comparable to an incandescent or halogen lamp- Low maintenance costs thanks to long lifetime- No UV and near-IR radiation in the light beam- Instant 100% light, no warm-up time- LED alternative to high voltage halogen lamps- Not dimmable- Base: E27