Power:8W, 14W,21W,28W,35W Certificate: CE,CCC,ISO 9000 Warranty: 2 years T5 ADAPTOR FUNCTION CHARACTERISTICS:1>Phosphorescent tube that provides a perfect lumination.2>High luminous efficency, good color rendering ,low light decay, long lifespan,flicker-free etc.3>High power electronic ballast, meeting the nations's "Green Lumination" request. So it's both energy saving and environmental protect. ...