These bulbs are necessary, but they have a super-short life span. The bulb lowers and blinks after only 3 weeks at 2 hours a day, five days a week. That's only about 28 or 30 hours! I was very dissapointed. But they are needed so my advice is: BUY ALOT!
Pro Tec Replacement Bulbs for Mighty Bright Sight Reader
The manufacturer's warranty covers parts for five years and labor for five years from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.
