How long does an ecoLED light last?

ecoLED lights depending on which chip is in a particular light can last up to 50 000 operating hours. What this means is that depending on how long you have a light on in a particular day. we are able to calculate +/- how many years the light is going to last.
eg: If a standard ecoLED down lights operating hours is 50 000 hours. and you have the light on for 8 hours a day this means that the light is going to last approximately    17.1 years.