Speech intelligibility is excellent, you have to pay attention to tightness of the 2.5 mm jack, so that there are no dropouts.
The cable is long enough for the actual telephone receiver can be clipped to a belt. The volume control is in order, the processing is also about price range level.
The review we are doing because a colleague with a 200 - unit was blown away, in terms of fit and speech intelligibility, and the unit has also been purchased.
