too cool - I'd love one of these for those long meetings / dates / presentations etc so I can just casually "feel" what time it is without being noticed looking

too cool - I'd love one of these for those long meetings / dates / presentations etc so I can just casually "feel" what time it is without being noticed looking at my watch or phone. I'd have to learn at least a subset of braille (numeric digits?) but it could actually be interesting to do that too.