Light bulb 6W (770lm) Ø80 Mirror E27
Useful information about light bulbs
When buying a new LED light bulb, there are some important things to be aware of.
The brightness of an LED bulb is measured in what is called lumen instead of watt.
15W = 140 lumens
25W = 250 lumens
40W = 470 lumens
60W = 800 lumens
75W = 1050 lumens
100W = 1520 lumens
In addition, a RA- or CRI-value is also stated on the light bulb. It describes the light's ability to reproduce colours and is assessed on a scale of 0-100 RA, where 100 RA corresponds to daylight.
For an ordinary home, it is recommended to use a light bulb with an RA value of min. 80RA.

the Kelvin rating, on the other hand, describes how warm the bulb's light is.
8.500 - 10,000 K = Cool blue
7.000 - 8,500 K = Cool white/blue
4.500 - 7,000 K = Cool white
3.000 - 4,500 K = Neutral white
1.000 - 3,000 K = Warm white
In comparison, the light from a candle has a kelvin level of approximately 1,500 K, direct sunlight is 5,500 K, while the blue sky reaches 10,000 K.