bought on June 22, 2013 10 piece ... the first Lighting EVER 12W A60 is now 13 January 2014 defective geworden..in sum I have 12 pcs. buy (2 more on 26 June 2013) with the light I am very satisfied , The life should be around the 50,000 hours ... 1 year has 9000 hours. About the other failures I will report