Well, they write up to 5 km, I give such an assessment of use. I tested in the city a distance of 1 km 100 meters, this is the limit, the most terrible interference goes on. Distance measured in maps I went fishing and used it already in the forest at a distance of 2 km, 200-300 meters further it was not legible. in places it was so that they were at a distance of 1500 meters from each other and there were already interference in which it was difficult to make out speech. All distances were measured by GPS. The result is a good toy for entertainment at a distance of no more than 1 km. For fishing I do not recommend and hunting too. for pampering then yes with a bang)
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