Brilliant. It’s a post-it note in the shape of a watch to wear around your wrist so you can write notes on the fly. The only problem is that most people wear their actual watches on the opposite wrist of their writing hand.
10 pounds for a set of 100 notes. Though I suppose it could be easy enough to make a similar rig with standard post-it notes, or with some regular paper and a single staple or some glue.