not state of the art bt headset but can confirm is in good working order, only slack part is that you have to stuff is in your ears rather than clinging to your ears. Thats why it has a matching neck strap, so you can hang it around the neck.
You know those progressive springs where the closer part coils always knocks each another when you're going through potholes, how to protect them from scratching till they rust? rubber water hose? got ah so small...