Osram Parathom 7.8W Dimmable LED MR16 4000K This low voltage MR16 from Osram is designed to be a high-quality, professional LED replacement for older 50W halogen bulbs. It offers a bright 621 lumen cool white light, & its focused 36° beam angle makes it absolutely ideal for museums, galleries, shop windows & display cabinets. It is also dimmable, giving you even more control over your lighting setup. The LED spotlight offers all the brightness of the halogen bulbs it replaces, but uses only a fraction of the energy. With a superior lifespan of 25, 000 hours, it will be years before this bulb needs replacing again. The two-pin GU5.3 base also retrofits to existing light fixtures, making it easy to swap out your old bulbs. Its full glass design also means that it won't look out of place if used alongside existing halogen lamps. Please note, as this is a low voltage bulb (12V), it needs to be fitted with a compatible low voltage driver/transformer when installed on a mains circuit. Please see the manufacturer's website for more details. Features 7.8W LED MR16 spotlight 12V 50W halogen alternative 621 lumens 4000K cool white 36° beam angle 25, 000 hour average rated life 100, 000 switching cycles Dimmable Dimensions: D51mm x L53mm