Golden Sun UL Listed Dimmable 5-watt R20/BR20 LED COB Flood Light Bulb, 50-watt Equivalent, 470 lumen, E27 Medium base, 4000K Natural White

Advantages:

1) SAVING over 90% on electricity bill of lighting by replacing incandescent bulbs
2) Use HIGH-TECH CERAMIC COB (chip on board) as light source to emit even and glare-free light
3) IDEAL COLOR -- four color options: WARM WHITE(2700K), SOFT WHITE(3000K), NATURAL WHITE(4000K), COOL WHITE(6000K)
4) INSTANT ON -- NO WARM UP
5) ENVIROMENTALLY FRIENDLY - 100% MERCURY, UV & IR FREE
6) 50, 000+ HOUR LIFE lasts 50x longer than standard incandescent bulbs

What is COB and Why using COB

COB (Chips on Board), is a new technology of LED packaging for LED light engine. Multi LED chips are packaged together as one lighting module. As normal LED lightsource such as SMD, High Power LED etc. is super bright in a small size, it usually causes uncomfortable glare and zebra strips comparing to traditional lighting like fluorescent lamp. However, COB LED is multi chips packaged, it can 10 times more increase lighting area, so it avoid uncomfortable glare by the maximum extent.