Hamilton Jazzmaster Maestro Auto ChronovsMarathon Steel Navigator SSNAV Auto

Owners widely praise the Hamilton Jazzmaster Maestro Auto Chrono for its dramatic increase in quality and attention to detail, its versatile dial layout suitable for dressing up or down, and its bulletproof build that remains problem-free for years. Accuracy figures range from gaining about 5 seconds per day to keeping time within 10 seconds per day even after extended periods without service. Some owners find the lack of a second hand a deal-breaker, and the 45mm size can be chunky and may not fit under shirt sleeves. Concerns exist regarding the movement's serviceability, high maintenance costs, and intervals. On balance, owners rate the Hamilton Jazzmaster Maestro Auto Chrono highly for its robust build and quality for the price, despite some reservations about its size and serviceability.

The Marathon Steel Navigator SSNAV Auto is praised for its high-accuracy quartz movement, with owners noting its comfort and reliable performance. Reviewers highlight its functional tool-watch appeal, featuring a sandblasted steel case, tritium tubes for constant low-light visibility, and 100-meter water resistance. One owner finds the 41mm case runs a bit small. The Marathon Steel Navigator SSNAV Auto utilizes an ETA F06.412 quartz movement with a claimed accuracy of +/- 10 seconds per year and includes a GMT bidirectional bezel. Overall, owners and reviewers rate the Marathon Steel Navigator SSNAV Auto highly for its comfortable wear and dependable, high-accuracy quartz movement.