Hi Grum
It’s good quality neat fit into the helmet, the two down sides, the batter doesn’t last as long as the 20s but we are talking 9 hours compared to about 11 hours. Also the charging connector being under the helmet can get bent, l know just had a week in France had it on charge pushed it out of the way on the worktop / dresser and bent the plug.
I like it as it’s neat and waterproof, but it’s not better than the 20s, that said 20s in bad weather could play up until dried out.
One thing for sure you won’t be able to move it from helmet to helmet?