Question about Jabra Elite sport

I don't see any annoying lag in the videos. Only on YouTube is there about 150ms, but that could be due to many other things.
I haven't measured the battery life, but it's certainly around 4 hours. But I sometimes leave them switched on when I'm not listening to anything - I don't put them back in their box. I also tend to listen to somewhat louder music that does not contain many quiet passages.
If you don't expect an audiophile level (which is technically impossible nowadays anyway), I find these Jabras simply ingenious.

There is no delay when watching videos. I had to charge my old Bluetooth headphones every evening, whereas now I only have to charge them every week (with the Böxli, of course). I don't know exactly whether the 4.5 hours are correct, because I always put them in the case after my commute of about 45-50 minutes. The various adjustment options are great and the in-ears also hold really well in the ear. However, I find that the ear hook in my right ear presses a little. If I put the headphones in properly, it works for about 30 minutes, then I have to put them in again. But basically top InEars and they are definitely worth the money.

I have not noticed any lag or delay so far.
I have never measured with the stopwatch how long the battery lasts exactly. I feel that it certainly lasts around 4.5 hours. Otherwise, it recharges very quickly in the transport box.
The operation with the app for sports works great.