1)Optional power: 35W,45W,55W,65W,75W,85W95W,105Wetc. 2)Operating voltage:110-130V or 220-240V. 3)Frequency:50/60HZ 4)Life-span:5000-8000hrs. 5)Color Temperature:6400K 6) Holder: B22/E27/E14 7) Materal: Good PCB/Good powder 8) Color: Daylight 9)Energy saving is 80% more than other common bulbs 10)Service life:8times longer than common bulbs 11)Adopts tri-color phosphor powder produces high and bright illumination effect 12)Applications:resideces,offices,restaurants,hotels,and shops 13)Legerity construction 14)High quality with competitive prices. 15)Quick delivery time