Aptly named, the Bright A19 is an A19-style bulb that measures 4.5 by 2.3 by 2.3 inches (HWD) and has a standard E26 screw-in base. It’s a dimmable LED bulb with a brightness range of 30 to ...

The bulb is dimmable and you can control how cool or ... They're a bit expensive at $20 a bulb, but the Nanoleaf Matter A19 Smart Bulbs are a solid pick if you need something with support for ...

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.

In our lab tests, Lightbulbs models like the A19/OM/800/LED are rated on multiple criteria, such as those listed below. Claimed life: Claimed life is how many years the manufacturer says the bulb ...