well bought mine today I needed for an office move, you would think why you want walkie talkies it’s actually use full u dont want to keep your mobile phone near you when you fixing and moving things. this one I bought is quite rugged they thought of every thing comes with a big case rechargeable battery but the good thing is you can use normal 4 AAA too so if you forget to charge and get up and going their is that option.
I haven’t tested it far but it works fine in normal office size places. It’s very clear too, it has some group call functions etc but I didnt use it yet but I’m sure it will work