... frequency:47-63HZ5Rated power:4w6Power factor:≥90%7Light source:3*1W high power LEDs8Luminous flux:280lm,use 1000hours, the ... )54mm, different for base16Net weight:47g17Certification:CE and RoHS compliant18Usage:Indoor showroom, club, store, cafes, bar, hotel, restaurant, ... 35000 hours ,10 times longer than conventional lamp 8 3 years warranty + 3 months guarantee for replacement of quality issues