Hamilton Khaki Aviation Converter Auto ChronovsTissot Telemeter 1938

The Hamilton Khaki Aviation Converter Auto Chrono is widely described as a large 44mm pilot's watch with a functional slide rule bezel. Reviewers note its well-finished steel case, featuring a robust satin-brushed finish with polished accents and chamfers, and a legible blue sunray dial with applied Super-LumiNova markers and old-fashioned hands. It is powered by the H-21-Si automatic chronograph movement, an upgraded ETA-based caliber with a silicon balance spring for anti-magnetic properties, offering a 60-hour power reserve. The watch is rated to 100m water resistance and features a bi-directional slide rule bezel with graduations printed under K1 mineral glass for scratch protection, which is easy to manipulate due to its deeply notched steel design. Some find the slide rule bezel complicated to use without a manual. One owner notes its character does not appeal as much as other slide bezel chronos.

The Tissot Telemeter 1938 is widely praised for its vintage-inspired aesthetic, handsome dial finishing, and value as a mechanical chronograph. Owners and reviewers highlight its balanced dial, the "old-looking" vintage logo, and the attractive two-tone dial variations. The Valjoux A05.231 movement is noted for its 68-hour power reserve, though one owner describes its feel as "alive" and "like its engine." The double-sided anti-reflective coating and the way sunlight interacts with the hands are also appreciated. However, the 42mm case size is frequently cited as being too large for a retro-inspired watch, with many wishing for a smaller option, and its 30-meter water resistance is considered poor. The pusher feel is described as sharp, though slightly stiff, and one reviewer found the Tissot branding on the dial and crown excessive.