A lot depends on your stature, vision and more.

K&F markets many quality products and this is another.

It is well-made. The collar has a nice silicone coating and is comfortable arou8nd the neck. It locks solidly into the centerpiece.

The magnets are strong enough to hold my iPhone, but I wouldn't trust them in any kind of "action" environment., (I wouldn't trust any similar device I've used either.)

The extension arm is longer than most I've seen on such devices. The chest strap is more than a nice touch: I think it's a necessity on devices of this kind to minimize unwanted movement of the camera.

For many people, this will be a great neck mount.

But it doesn't work as well as I would like for me. I wear glasses and the screen is brought too close to my my face for me to focus on the screen, so I am left having to just rely on hope that I am capturing the scene I want. Critical framing is out.

I have a large neck, but the collar is on the short side for me which adds to my difficulty in viewing the stream or recording my own face.

So for me, this works more like a chest mount. For others, with smaller necks and better vision, this is a good neck mount.