We have mainly three types of LED DOB used for making DOB Based LED Bulb. (1). Alpha DOB LED Bulb. (2). Beta DOB LED Bulb. (3). Prime DOB LED Bulb. This DOB based LED Bulb is available in 3W, 5W, 7W, 9W, 12W,15W and 18W and high watts also. It is known for glimmer proof brightening and appealing structure.