Top positive review
The separate neck section on this design stops "whooshing" sound from rubbing on clothes.
Reviewed in Canada on February 3, 2020
I initially didn't like the look of the two pieces which hang around your neck. I had other ones without those that seemed subtler and better-looking. Now I get why they're shaped like this.
When you use the other style (the ones without the separate neck section) any time you move your head or shoulders the wires rub against you clothes and you can hear it through the wires. It's that low rumble sound like wind blowing over a microphone or something
With this design with the two big battery sections that hang around your neck, those pieces stay still against your collar and only the loops of thinner wire coming out of them move. Since they don't touch your body they don't make any noise.
I never really thought about it unitl I wore these but the difference is obvious. Don't get wired-wireless earbuds without it.