The sound was crisp and clear, and the batteries lasted as long as the seller described

The sound is amazingly sharp, clear, and totally understandable with no squelch or background noise

The sound was very clear at about 1 and 1/2 miles over water (a large lake)

The sound is crisp and clear and the range is enough that we can also use them to communicate with the tender (dinghy) when away from the boat

Sound was excellent.