This low voltage MR16 from Osram features an innovative GLOWdim capability, which allows the bulb to change colour temperature as it is dimmed. At its full brightness, it emits a bright 345 lumen warm white 2700K light, warming to 2000K when dimmed to its lowest setting. The lamp is compatible with standard dimmers switches (please see manufacturer\'s website for more information), and offers an energy efficient, long lasting alternative to traditional halogen spotlights. The two-pin GU5.3 base directly retrofits to existing light fixtures, so installing the bulb is simply a case of swapping the old one out for the new. Its focused 36 beam angle makes it ideal for task lighting around the home, or for use in museums, galleries, shop windows and display cabinets.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.5.5W LED MR16 spotlightGLOWdim tuneable white technology345 lumens2700K warm white - 2000K extra warm white36 beam angle15,000 hour average rated life100,000 switching cyclesPlease note that theis light bulb will operate with most AC and DC 12V transformers. However, some 12V transformers may have a minimum required load which may not be met when installing low powered LEDs: these drivers may cause flickering or the LEDs not to function correctly. If this issue arises it may be necessary to source a suitable LED driver. Please refer to the manufacturers website for compatibility.