5 stars for the voice quality at this price

Yes, of course there is much more quality for a lot more money. But who we only language (no vocals) studied convenient headset will be well served here.
The headband is lightweight, sits safely and comfortably and is easy to set up / discontinued.
The micro is fine adjustable and keeps the set position well.
The transmitter is appropriate. Although the battery compartment revealed that the plastic and precision are not perfect - but seen from the outside all parts of fully satisfying.
The cable from the headset to the transmitter is even-coated, so it (if under clothes laid) on the skin does not bother so. The 3,5er jack can be screwed, so that the plug is in there too, if, for example, is something train on the cable by a clumsy movement.
Bad experience I did last week: I had the antennas not undressed and therefore there were already at 3 m distance dropouts (person was between transmitter and receiver). Perhaps this is the secret of why the reviews vary in the opinions to reach so. Just off the reception antennas and works without dropouts even through the concrete ceiling.
When I turn on the transmitter, it displays by brief flashes of the LED if the battery still holds.
At the receiver a switched channel is displayed immediately by LED - which gives security instead of troubleshooting.
The receiver itself also visually do something here, even compared to our more expensive brand equipment.
The sound quality is perfect for voice, the voice sounds natural. The general problem "blowing, coughing, noisy breathing" is reducible by the micro is not bent directly over his mouth but slightly to the side. The voice is still loud to hear background noises are still well hidden.
Overall, a strong buy recommendation for the "language" - recommended for vocals only conditionally.