Benefit from the evolution of LED technology, both performance and cost of LED chips is decreasing rapidly.
Widely used LED chips brands: CREE, Bridgelux, Philips, Osram, Jufei, Hongli, 

Unlike traditional halogen or incandescent lamps, now we use lumens as a basic criteria to determine a lamp.
As the efficacy of LED lamps is far more higher than halogen or incandescent lamps, instead focusing on watts we shall eye on the lumens when we choosing a suitable lamp for a certain lighting project.

LED lighting products also produce tremendous heat as they're working. Overheat will bring damage LED and cause high lumen loss. As there is hurt to LED drivers due to overheat, electrical components will become unstable and result in problems of flicker, color shift, electrical component failures.
Thus, as the commence of product development, overheat issue needs to be taken into consideration electrically and structrually.

The pervalent CCT is 2700K, 3000K, 4000K.

RGB color changing and blending, white color tunable.

Smart LED lighting refers to those with Bluetooth,WIFI,RF,IR,PLC enabled lighting products; perform with RGB changing/White color tunable or the combination of RGB changing and white color tunable.
Smart LED lghting is often controlled by App on smart devices or remotes. It also connects to internet and realizea long-distant control.

In an effort to reduce the inventory cost, the concept of beam angle changeable LED lighting products is came up.
In a lamp, by twisting the optic, you will get different beam angles.
When we have different combinations of watts, cct, beam angles, distributors will need to buy a large qty of lamps to stock. If we have one lamp with watts/cct/beam angles adjustable feature, then we can save tremendous money on inventory.