The pegs can represent every number from 0 to 9. I often wondered how many pegs you would need to add to get the alphabet, not many but you get a cleaner finish if you just use a matrix of dots.
When the sun is shining very brightly, it becomes more obvious that the background of the watch face is beige in colour and you can also see a very slight smear of coloured streaks. This is what I call the fizz. I would get that with my tamogotchi from the 90s. Tamogotchis were key chains with dot matrix displays that housed a virtual pet. It was a toy that was very popular in the 90s.
For me the fizz is seeing beauty in details. A moment in time when everything is calm and I am left focusing on one thing in detail.