These things are great. We've got two of them; one for each of our twin boys. The kids are two, and they can figure out how to play back messages and even send them. They're cute and they work really well. Also terrific, responsive customer service.
I'd prefer if there was a way to lock or secure the zipper (sometimes our kids take the talkie boxes out of the stuffed animal), but we managed to tie it up well enough. Our kids are probably younger than the targeted age, so I can't fault them for that!