I changed out the band on both my Prometheus Chron and OD, and used a small jewelers screwdriver. I had a set and just tried one till I found one that worked. I recall it being the smallest I had, but cannot give you the specific size.
A forum community dedicated to watch owners and enthusiasts. Come join the discussion about watch collections, displays, watch winders, accessories, classifieds, and more! We welcome all manufacturers including Casio G-Shock, OMEGA, Rolex, Breitling, Rolex and Tudor, Seiko, Grand Seiko and others.