They are small but very cool and fun! Ideal for 3-5 years. Two buttons, one to talk and one to call, which sounds like a cell phone. Also, they glow. I was very skeptical when my wife showed it to me but this is one of those hidden gems to steal! Don't expect high tech with 50 channels it's just a basic walkie talkie lots of fun and our 5 year old son loves them so much!