LED 2D 10W

Is the unit of measurement of how bright the light is, dont be confused with LUX which how much light hits a surface.

This is the angle degree in which the light spreads out. For example a torch , it has a very small beam angle ( 6-15) that focuses the light in a very tight cone whereas a flood would have a very wide spread ( 140)

This is the power consumption of the light, it might look a lot smaller than usual, dont worry thats just the power of LED lighting.

Colour Temperature is the colour of the light.

Warm white is 2700k-3500k

Cool white is 5000k-6500k

163mm * 163mm * 29mm

CL-2D-10-CW / WW 

This is fitting can come as dimmable as optional.

is the Colour Rendering Index which is like the quality of light. Think of it as a percentage of the full colour spectrum. 100 would have 100% of accurate colour rendering whereas cri of 60 would have slightly washed out colours due to only have 60% of the spectrum.