I spotted these in my local Japanese bookshop. I have no idea if there is actual book inside the box or if the book or mook is separate from the box. Ok I have checked, there is a mini book inside the box.
moz Classic Wacth book. 36mm diameter and its to celebrate the 20th anniversary of moz. moz is Swedish fashion brand.
NTD902 or USD30.
The book shop seems to have lots of them.