These masterplug led gu10 bulbs replicate traditional halogen bulbs in appearance and output featuring upgraded ic driver technology providing a 90 energy saving versus their halogen equivalents the sparkling edge2edge lens maximise illumination and features an adjustable colour temperature between warm white 2200k 2700k the bulbs are a43 rated with a 38 beam angle they have an average rated life of 25000 hours and are dimmable specification fitting gu10input wattage 5 watt lumens of light 370