As other reviewers mentioned: this is it. This is the one headset that your friends can finally hear you!I've purchases so so many headsets, and it's always the same story => no one can hear me clearly, until I give up and use the phone directly.Not the case with this device.All of those small in-ear devices are fun, they are good for music and all, but none come close when you actually want to use them for phone calls.Some might work in a quiet room, but in the car => they all fail.For me it's "almost enough" that it just works for phone calls and specifically while driving.But with this set, there are other things:1. USB-C2. Connects super quick + acknowledge sound that it connected3. Call quality is amazing (people can actually hear you... how many other headsets can honestly say this?)4. Fast charging5. Lasts long! (battery life)6. I love the on/off switch! I love that it's mechanical.7. Small enough to fit in your pocket, but not too small that you lose it :) (like with those small in-ear headsets)The only cons is => how it fits in the ear.To solve this, what I do is I purchase a replaceable ear piece and glue it! yes! glue it. Then it's comfortable.I wish they would just come like that (with a more comfortable earbud), but if that's the price I have to pay for all the other pluses => I take it.Note: also their other headset: S80 is very good, but I had to return one that didn't work.I now only rely on these.One at home, one in the car, one in my pocket! :) I know, a lot, but if you're like me => just having one => you find that you need it suddenly in the car, and at home on the computer etc :)