Actual 3K or 12.5K color temperature (kelvin) is the average measured color temperature of 10 bulb samples. Those with 2700 K are closest to incandescent bulbs; ones with 3000 K are similar to ...

Efficiency is the comparison of the amount of light (lumens) produced by a given amount of electrical energy (watts). The more the lumens per watt the more efficient the bulb.

Bad lighting sets the wrong vibe, but these smart bulbs let you switch colors, dim the lights, and set the mood, all for less than the price of a fancy coffee (per bulb).