I bought the walkie talkies for my children. You play beautifully and so when it comes to the playground, a model for me is that I can anfunken if it is getting too long (children six and seven years). Qualitatively super processed, it roars nix and the children come super clear to the handling. Reach we have not fully tested but to the garden about 500 meters and the playground (a row of houses and about 700 m) it works perfectly. For our purposes, a great product and also for the price absolutely recommendable. For battery power, I can not say much.
