We have 4 of these in my band for our in-ear setup, and we are happy with them. They work as intended and we have no complaints on the sound quality.
However, they feel very cheap. The belt clip is quite soft, and can easily be bent. If you drop it or shakes it, the batteries can detach inside the unit, so the sound dies, and you need to open it and put the batteries in their right place in order to get it working again. This is quite annoying, and we might experiment with putting a small piece of foam in the battery compartment to make sure that the batteries can't detach inside.