Compared to sebson GU10 LED lamp 3.5W 300lm this is already bright, but when you buy I have a little more brightness expected. Nevertheless, the area in which I want it bright, lit better than with 300lm LED.
For life 500lm LED I can not say anything yet, but we are in the house a lot of different LEDs of sebson and so far have only kaputtgegangen 2 LEDs - the first failed after 3 months, the other for a year.
The remaining sebson LEDs work perfectly for 2 years and are very satisfied with sebson LEDs.