New to site, very impressed! Another reason to stay up too late, thanks... Surprised didn't find much info on Zepp (there's my answer!). 10u, like most of yours, is BBall obsessed and can't get enough practice time/feedback. He saw cousins use GoPro for skiing and now his sales pitch is it would help him with BBall analysis. Now he came cross Zepp. These are high $$, I feel 10u age may be 2 years early to use technology to turn the data into better outcomes. Agree/disagree? Personally, I agree they could be fun gadgets and I am just dangerous enough to appreciate data/swing analysis. Just think it might be cool and fun vs. actionable.