The devices are processed surprisingly robust, feel in your hands very well, because they are so nice and round and rubberized. They act - also through a solid weight - higher quality, as has been suggested by the low price. The parts are certainly something for adults, for example, on hikes or when traveling with two cars.
The connection quality is fine. Although the whole thing is reminiscent of older radios, with some noise and slight distortion when speaking too close and loud into the microphone. But one understands anything.