a good lamp ?

Intéressant. merci beaucoup

non le ho da molto quindi non so' esattamente quanto dureranno sul sito dicono questo.. Lifetime 50,000 hours (8.5 years @ 16hour/day)

that lamp will last longer tan most.. the diode count assures you of that... they power them at the same watts as teh samsung.com spec sheet testing paramaters. put a little breeze on them to ensure longevity, but even without should be 7 years or more depending on yearly use.. .50,000 hours for an FC model isn't outlandish. The lights that run hotter with same diodes might reach 25-30k before tehy dim to 90%. (longevity curve on samsung.com spec sheet for lm301b / h will verify what i say) The only reason you'd need more is if you tightly control environment and boost co2 to 1200-1300ppm ... then, you could probably use 20-25% more.

Ok thank you for your opinion, how long have your led lamps lived?

si la mars copre bene quel tipo di box e dovrebbe essere valida.. io personalmente mi trovo molto bene con Migro ha qualche watt in meno ma è ottima almeno per me la uso in un box un po' piu piccolo ma copre 100x100 senza problemi