On the Viribright website it says:" Viribright’s LEDs are specially engineered and tested to last an astounding 25,000 hours. When operated 3 hours a day the Viribright LED can last up to 22 years". This one was used for more then 3 hours a day for one year and one month then went on the blink. Even if used for a maximum of say 15 hours a day that totals almost 5,000 hours in a year. Comes no where near what they claim. I mean to say who uses a light bulb for only 3 hours day? So much for 3 year warranty totally useless and because this was a replacement bulb they would not issue another! Yes, I did contact them and was told about the 3 hour limit and only one replacement bulb allowed. Not a happy customer.