This is the second light that I have purchased from the same company through Amazon.  The first light lasted at least 3 years with no problems.  As another reviewer said, the switch is very poorly made.  The switch started going bad about 6 months ago, shutting itself off.  I had to turn it back on two or three times a day.  The light got a lot of on time as I am constantly on the computer daily. It is mounted above my monitor on my desk.  I got good service from the last one so I think I should get pretty much the same amount of time from this one.