It’s an extraordinary mobile piece that’s ready to be used with all the boutique series models. The keys and kick stand are quite sturdy. The kick stand has a low and high position with easy quick setup. Size wise it fits into any standard size backpack. 5/5
It's not particularly well built, feels rather plastic, isn't all that great to play (lot of key travel) and is quite noisy. And for all that you pay an arm and a leg! But it's just so darn convenient to have a small attachable keyboard! And there's really no other alternative, especially if you want something you can simply pick up and play anywhere. So I have to (reluctantly) recommend the K-25m.