When buying LED light, the strength is measured in Lumens instead of watts. When looking at an Energy label of an appliance, look for LED with A+ class and above. Then you are sure to buy LED with good light.
Check the light's colour: Warm light at 2.700-3.300 K is very similar to the light that comes from a light bulb. 3.300-5.000 kelvin provides a neutral light while strength above 5.000 K provides a cool light that corresponds to daylight in the middle of the day.
Consider the possibility of dimming.
What is the light beam angle? Check if the LED light bulb fits your needs. The beam angle of the light should be on the packaging and given in degrees (°).
Colour rendering index? With Ra of minimum 80 the colour is not good enough so go for Ra of 90 or more.
