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 Note: 1.Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 302 hours Hope you have a pleasant shopping experience!