The ProLite 3.5W G9 Dimmable LED light bulb is a replacement for the older halogen G9 capsule light bulbs.It is designed to give a similar appearance to older halogen G9 light bulbs. It fits in standard fittings and has an average life of 25,000 hours. With a colour temperature of 6400K it produces a bright ,crisp, daylight white light and has 340 lumens. ProLite suggests a Varilight V-Pro dimmer for best results.Fitted with a G9 2-pin (9mm apart) push fit base.Please visit the manufacturer\'s website for up-to-date dimmer switch compatibility lists for this Prolite LED G9 Capsule light bulb before purchase.To find the answers to some common questions about LED dimming, please read our guide Dimming for Dummies.