Projector has 1000 hours and is rated at 60,000+ hours. I have calibrated the projector, so you will not need to calibrate again for awhile. Beautiful picture. DC4 and .95 chip means its extremely sharp and a steal for the price. Rated at 600 lumens, but since its an LED projector, it seems much brighter to the eye. Great placement with plenty lens shift. Comes with the short throw lens, so you can get a bigger image. Its a fantastic projector, hate to let it go. Don't take my word for it, look at professional reviews.