Stay in touch with your crew with a pair of these Cobra two-way radios. Each radio has 10 NOAA weather channels for quickly checking storm situations, while 121 privacy codes offer up to 2662 channels to prevent interference from other units. These Cobra two-way radios use NiMH batteries that are rechargeable with the included Micro-USB cable.
Like the summary says... hello can you hear me is what I was asking my wife when we were traveling. Bought these to keep in touch while we had to drive cross country in two vehicles. If I could see her and she was no more then 100 yards away we could talk. But if she got further ahead or behind me we could not talk at all. Line of sight would be great but we still couldn't talk. When we could talk they were perfect and I have nothing but good to say about that. Can't use it while it's charging on the car charger. It will turn off and you wouldn't even know it. Haven't tested them on any hikes yet but. I plan on trying to see how well they will work then.