Help identifying two watches passed from grandfather

[watchmework]

Hey folks-

These two watches were handed down to me from my grandfather when he passed away and I’d like to try and find out more information on them. In addition to trying to identify them I’m also looking to see if it’s possible to buy a link for the two tone bracelet as it’s too small to fit my wrist. I really appreciate your help in taking a look at this and volunteering any information you might have. Im new to the Citizen game but have a couple of Rolex watches that I have built up for myself over the years and it would be fantastic to have more background on these pieces, thanks in advance!