Purchased for my church media team 300400. Only ever need five as far as I can tell. Works like professional headsets, very clear wireless sound through multiple walls and multi-story buildings (through thick concrete and steel floors). However, only use them in relative proximity and only for a few hours so I'm not pushing them to the limit in any way. The only compromise for the lower price point is the cheap plastic feel and the battery compartment is a bit difficult to open and close.
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