Hamilton Jazzmaster Seaview Auto ChronovsMarathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic

Owners report that after seven years of daily wear, the Hamilton Jazzmaster Seaview Auto Chrono began gaining approximately 15 seconds per day, requiring a service. Post-service, accuracy improved to +/- 4 seconds per day, and a case replacement was included in a $220 plus tax service cost. One owner finds the Hamilton Jazzmaster Seaview Auto Chrono attractive with its sapphire bezel, clean dial, and polished/brushed finishing. On balance, owners value the watch's aesthetics and finishing, though one owner considers its retail price too high for a quartz model.

Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.