I haven't done extensive testing to verify all the claims made, but the apparent build quality and light output is very good. Beam angle is quite wide for a GU10 with a TIR based optic, while the beam profile very smooth. Light quality (CCT and CRI) is also good for an LED bulb. I Have tested a lot of GU10 LED light bulbs on many different factors and this is one of the best all-round bulbs I have tested and for a good price too.
