This indicates which wattage of your old/conventional lighting is replaced by this LED product.
A ballast can be seen as an energy regulator that switches on the lighting. Is there a starter in the fixture? Then this is a conventional ballast (EM). Fixtures with an electronic ballast (HF) don't have a starter. A LED driver can be compared to an electronic ballast and only works with LED lighting.
The colour code is a combination of the colour rendering index (CRI) and the colour temperature (K). The first number refers to the CRI (1 = very poor colour rendering, 9 = maximum accuracy). The second and third numbers refer to the colour temperature. For example, a light with a colour code of 830 has very good colour rendering and produces a warm white light.
Luminous Flux (Lumen)
Lumen (lm) is the term used to describe the total amount of visible light emitted by a light source. The higher the number of lumens, the brighter it is.