As walkie-talkies were originally developed for the military, I'm not sure that these things are quite obsolete for infantry (though I couldn't say for sure). I will say that back in my day, toy walkie-talkies were one of the best Christmas presents a young boy could get (ahh, simpler times). Since I'm assuming that these are still useful for recreational purposes and (as other comments have noted) the technology has simply switched to cellular, four stars for the walkie-talkie.