I was in Hong Kong when the first G-Shock came out. It was then quite a revolution in affordable durability and I believe it still holds a few records. After almost 40 years and 200+ different models, it comes with all sorts of useful built-in features. I was collecting gadget watches at the time but I skipped the G-Shock, opting instead for the Citizen ProMaster Tough with its solar cell, titanium body and kevlar wristband. I somehow misplaced my first copy in the 90s but was able to buy a new one last year; it comes and goes from the catalog.