Brand New Bayonet Cap (BC) [B22] Extra Warm White 2200K. The bulb is approximately 138mm high by 95mm wide. These LED bulbs are dimmable. 5W = 35W = 400 lumens. 10,000 hours lifespan. Using LED bulbs over CFL and incandescent bulbs have major advantages. A few to mention are that LED bulbs turn on to full brightness. No more waiting for light bulbs to warm up, LED's do this instantly. LED light bulbs also use a lot less energy in comparison to their counterparts, switching over to LED light bulbs will save you money in the long run as they also last longer!