[Oil Object Insp]

The book you’re describing is likely “The Moon is a Harsh Mistress” by Robert Heinlein, first published in 1966.

I’ll have to confirm, to see if it was a watch, I was remembering a bracelet.

[Red Badger]

I have that in hard copy and the original manuscript copy published after his death which the editors of the time chopped out a lot.................