The 4FLOW™ Cree Lighting® LED bulb looks and lights even more like a light bulb. Instant on light, dimmable with most standard dimmers. Uses up to 85% less energy than an incandescent while lasting about 25 times longer, Next-generation 4Flow filament design creates a compact, ventilated, all-around light source, to look and light even more like a light bulb, built from durable, shatter proof plastic, mercury free, A-type bulb design weighs less than 2 oz and uses a standard E26 screw base, 30000 hr lifetime, suitable for damp locations.