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

LED light bulbs are bright, energy-efficient and can ... Philips Hue has an expensive reputation, but its dimmable white light LED smart bulbs only cost $15 each, and you can get a starter kit ...

Unlike IKEA's previous smart bulbs, the TRADFRI LED E14 806 lumen bulb provides both dimmable white and coloured lighting, allowing users to pick and choose from a variety of moods. The colour ...

This is the product's overall performance score, based on key tests conducted by our industry experts in the CHOICE labs.

The TRADFRI LED E14 806 lumen bulb provides both dimmable white and coloured lighting, and has a 25,000 day life expectancy. In the UK, it's priced at £11, and an E27 version is also available ...