Instruct: Classify Amazon reviews into positive or negative sentiment
Query: simple to use

We got two remote control cars for our 3.5-year-old twins this Christmas, and someone else (coincidentally) got them another two. This one was, by far, the easiest to operate. The other ones caused a bit of frustration for them (though they still enjoy them-- and I should concded that those other ones were rated for kids 5 and up or so). But this one was really easy for them to use from the start, and yet doesn't really seem less functional or particularly more baby-ish or anything.Only downside is that you can't choose it's channel, so if you have multiple RC cars going at once, they might end up getting controlled by other controllers. My kids generally find this amusing, though, so not a big problem. And the advantage of having one pre-set channel is that there are no problems with channel on remote and on car getting out of sync, which does cause confusion for the cars we have that have variable channel choices.