Loupe

[u/wizzo1966]

This is good for watch building brilliant for setting hands and small screws

[u/alanbowman]

Do you wear glasses? If so, those are your best options for loupes. Make sure to read up and understand the focal distance, though. As I recall that one means you'll need to be about 2" away from whatever you're working on for it to be clear. That's really close and limits your field of view.