Well, while I appreciate the nod to the TOS communicators, these versions feel somewhat lacking compared to the originals. The large areas of blank blue plastic probably don't help, it just looks like the designer ran out gubbins to fill the space.
It's worth keeping in mind that the props weren't really meant to be viewed in detail. With communicators, the front part would usually be facing the actor instead of the camera anyway, so you might not get that close a look at it.
And in film, sometimes less detail is what you want. If you look at reproductions of classic matte paintings from the pre-digital era, it's often surprising how impressionistic they are, compared to how lifelike they seemed onscreen. The eye focuses mostly on the moving part of the image, so the rest of it doesn't need that much detail. Maybe the same goes for props.
Anyway, interior aside, I think this is a really nice communicator design. It captures the feel of the original very well, but in a sleeker way. It's almost like it's halfway between a TOS communicator shell and a modern smartphone case.