This Sylvania brand 4.2 watt LED GU10 bulb with an Energy Rating of A+, is a direct replacement for an old fashioned halogen bulb. Found all around the home, offices, retail and restaurants these warm white 3000k bulbs have a Lumen output of 345. With a wide beam angle of 36 degrees, this bulb has a very long average rated life of 15,000 hours.