Osram Parathom 3.3W Dimmable LED MR11 12V GU4 This low voltage MR11 from Osram is designed to be a high-quality, professional LED replacement for older 20W halogen bulbs. It offers a bright 184 lumens of warm 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 GU4 base also retrofits to existing light fixtures, making it easy to swap out your old bulbs. 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 3.3W LED MR11 spotlight 12V 20W halogen alternative 184 lumens 2700K warm white 36° beam angle 25, 000 hour average rated life 100, 000 switching cycles Dimmable Dimensions: D35mm x L39mm