very good product, good range, but ...

to replace a Logitech wired to be more mobile during my lectures, it is a great product with a very correct range (6m from one floor to another without problem).
the only fault is the "mute" button that has not light, so difficult to ascertain whether one is in mute, if you have not heard the small sound passage on / off for being mute ( mute).
damage, I take off a star for that.