The iTypewriter by Austin Yang, who sez:
It is a typewriter for the ipad. Users can enjoy the old feeling of typing and also the lastest technology. Even though the elder users who have never used the computer or ipad, they can use this familiar typewriter and type in the familiar operation way. For some specific group of users, this product provide an easier way to type on the ipad. People could be able to recollect old experience and memory by familiar appearance and haptic feedback.
Almost certainly some class of wind-up, in which case the demo video shot in portrait format, presumably on an iPhone, is a lovely touch.