When it says it's 'mini' it really means it. This is about the size of a coin. It's perfect as a hanging charm for a phone or for your keys. Personally, I use it for my 2DS (there is a hole for hand straps and I've used that to feed the ball chain through it). I don't know if it's durable yet. If I see anything worth mentioning in the future, I'll update my review.
