Thought I would share some photo's with you all, MY Rolex GMT is one of my favorite watches it is not a chronograph- and I love Chronographs, but is is a very beautiful watch.
The main watch of interest in the 3 photo's would be the very rare Certina, it has the battery movement that is half mechanical half electronic. The Certina Biostar tells you through Biorhythms if it is going to be a good day or not, think it says my day today will be OK- adjusted to the owners birth date so I can not tell you about your day. Lastly the divers chronograph is identical to the "Aviator Sea Diver" made by Nivada also sold as Croton. This one has a Valjoux movement beating away under the dial.