Hi,
I’ve got a Citizen New Master. I’m looking for some info.
1. I need a new crystal. I assume to get the correct crystal, I’ll need the model/caliber number.
How do I find that? Here’s the info on the back of the watch:
Outside Edge: Waterproof Automatic G.P. Stainless back 4-540166
Lower center back: 62-5221 Citizen 90200532.

Not sure if the caliber number is in there or not. Would also be looking for a technical manual if one is available

Thx.