Loving the loss of the cables, although the sound quality is merely adequate. I listen to a lot of live stuff, so sound qual isn't that great anyway, it's more about the video/sound combo. These feel light and flimsy, but very easy to use. Not very loud, but if you use VLC you can always pump the player's volume up to 120% plus. Have a switch, so you can save power when you're not using them. Range is good, I can pop over to the photocopier and back while listening.

Build quality is cheap. Wire across top is falling out. Whole thing feels cheap and flimsy. Audio quality is just very average. Radio reception is also quite poor and even messed up by sustained Wifi traffic. Compared to the Rapoo H8030 2.4GHZ Wireless Headset they are simply crap. I would have got a new set of H8030, which lasted over 2 years but could not find them anymore. Not wanting bluetooth ones, feeling very sad that this is the best Logitech can do.

Nice and light, comfortable headset with reasonable sound quality. I use this for online meetings. 33m range is a stretch – maybe direct line of sight, but if you go round a corner, you've lost connection within a couple of metres. If using for work purposes, you must remember to charge it twice a day as the use time is 6 hours. When going flat it goes hopelessly crackly for whoever is on the other end and if you don't have a backup headset your meeting is over.