Bulbs purchased on 30/01/2015. In March, 1 ampoule HS ... and obviously no guarantees. Let's see if others take over a month. It is far from 10 or 15,000 hours of lifetime! At 8 we could expect better. Urges all brands models available in GSB, with guarantee. Call Internet users: We always encourage you to review a hot product. Expect to see his behavior in time before positioning you.