To describe this toy in brief I'd have to say all it is is a large calculator that makes a "ding" noise when it opens. I purchased it for my 6 year old so she can practice math through productive play but for what I spent ($33) I was better off purchasing her fake money from the 99cent store and a large calculator, I would've save a good amount of bucks and it wouldve been the same effect. The dollar bills and coins do not look realistic as advertised and it is not solar powered it uses a cell battery. So much for reading reviews! If it didnt cost dam near as much as I paid for it to send it back I wouldve sent it back as soon as I opened it and tried it out. It didnt captivate her amusement but for 30min. There are better options out there. DON'T BUY THIS TOY FOR MORE THAN $10 As for durability it is sturdy. The plastic is very thick.