Effective on a sparse beard

Unable to test it on me is my 18 year old son who takes advantage of this razor, which is its first electric razor. What he said:
"The razor is very easy to use, the initial set-up is a little tedious, but then it is a treat (especially when one does not want to shave foam ...).
Ergonomic and efficient, it has a good battery life, which makes it all the more convenient. Personally, I adopted it very quickly! The shaving time is reduced, this is quite what I expected! "