1. This is a copper wire led light bulb, because the small size led chips are welded on the copper wire, about 5-10cm interval. The copper wire led is put into the glass bulb randomly, the Kelvin is about 220-2700K, with little lumen output, so the led looks like stars on the night sky, looks very beautiful! But the lumen output for copper wire led lamp is small, usually about 70-120lm not much bright, and the color rendering index is about 80, not much high, it can not be used for illumination, mainly used as a secondary light.
2. There are usually 2 glass colors for copper wire led lamps, they are amber gold color and clear color. Because the light output is much warm and soft, so the cap is usually with brass yellow color, not nickel plated brass cap which is silver color. Usually there is about 50-70 pieces led chips inside of one copper wire led lamp.