1) Fit for :8W,14W,21W,28W,35W 2) 110V 50HZ, 220V 60HZ ... to 45% energy saving over equivalent T8 lamps and more for T10 or T12 lamps;- At least 10% extra lumen output ... High Standard Ballast, PF≥0.95, THD≤30%, Life = 15,000 hours, Pass EMC and LVD Testing;Normal Low Standard Ballast ...