The Motorola Twinpack TLKR T3 is super in price and performance. We took 5 cars column and had among others 5 different Walkie Talkie's the start. All were able to crisscross each other entertained - without interference. We have not exhausted the 5K limit. Children as well as adults had fun with it. It is handy and super practical in use. It was at the age of 4 - ??? used.