A:Answer Without paperwork in front me, i don't know warranty but guessing a year. You can probably find that info on their site or maybe through Best Buy. Lumen wise, not overly bright. if I had to guess, under 100, but this is more of a reading light or an immediate area style light and not really made to broadcast alot of light in a large area. I use 4 and 6 foot tables and it lights the tables pretty good to see everything. As far as the timer, you can have it on or off. I don't use it, so light stays on until I turn it off.