Usage Tips:Features: 1.This product is of good quality, long life, high luminous efficiency, significant energy saving, energy saving rate of 80%, the natural light color, pure tricolor tube. 2.High-quality three-color phosphor, high brightness, light output increases. 3.Light soft, prolonged use of the eyes will not fatigue, improve work efficiency. 4.Lamp light is small, both ends of the inner electrode fitted with a protective ring, effectively reduce electrode sputtering, reduce blackheads, extend lamp life. 5.Use: supporting the ceiling using, for use in home lighting or lighting in public places. 2D Tube Parameters: Lamp holder: four needle Rated voltage: 220V Rated power: 10W 16W 21W 28W 38W Life: 6000 hours