In January 1960, Lieutenant Don Walsh of the US Navy and co-pilot Jacques Piccard achieved a record-breaking dive of 10,916 meters in the Challenger Deep while wearing the original Model 60. This groundbreaking expedition established the Model 60 as Aquastar's premier tool watch ...In January 1960, Lieutenant Don Walsh of the US Navy and co-pilot Jacques Piccard achieved a record-breaking dive of 10,916 meters in the Challenger Deep while wearing the original Model 60. This groundbreaking expedition established the Model 60 as Aquastar's premier tool watch and established its reputation as the preferred timepiece for mariners, expert divers, and ocean conservationists due to its innovation and dependability.