This toy is well built and definitely durable.

The little heads pop up when the lever, switch, dial, or button in front of them is activated. Each one makes a different noise (ping, click, etc.) and has a different method to pop up, so it gives our 10 month old a variety of methods to learn. She's able to pop them down again and do it again, and no batteries are required, so it's all baby power. It seems to keep her interest for quite a while, and overall we're pretty happy with it. Occasionally, if one of the switches gets positioned just right, you can't pop the head with it back down until you adjust the switch again, but this doesn't happen very often.

The biggest downside I can think of (which has nothing to do with the toy itself) is that because of how easy it is for her to get a hold of, she occasionally picks it up and slams it against the floor when playing with it. So it is definitely durable, as it has taken quite a beating and works just fine.