Activation Mount & Blade Whats A Good Set Of Walkie Talkies I Can Buy From A Store?

Whats a good set of walkie talkies i can buy from a store? - activation mount & blade

RadioShack store or at Walmart

I need a pair of walkie-talkies, when have for airsoft, if the distance was a good choice for communicating with the qualities
tough
Location for mounting on the helmet
-cheap
Sound Quality
Have voice activation would be nice if I wouldnt be all the buttons during the fight, press

Thank you for helping us yous