Left is the newer expedition north solar powered 36mm (sapphire crystal is flat, screw down crown and 100m water resistant).
No idea what the one on the right is specifically, but back says “Stainless Steel Case / Water Resistant / Circa 2008”. Also the crystal is domed. Case diameter seems identical. Quartz not Solar.
What would be your preference between the two and why? Curious what people pick.
Both.