6 watt, A19 shape, 3000 Kelvin with 250 Lumens LED bulb lasts up to 50 times longer than a similar incandescent bulb, while it uses 90 percent less energy. A19 is the shape of the common household light bulb. This omnidirectional light distribution bulb's instant full brightness doesn't need to warm up, which makes you feel even more like you have the bulb you've known for years in the socket. This LED bulb is an ideal replacement for 40 watt incandescent or halogen bulbs. 4-.13" long x 2-3/8" diameter bulb fits in all standard sockets.