If there were any watch out there that embodies the unfussy tool watch, the Sinn 358 DIAPAL must be near the top of the list – even though the same could be said of a great number of watches from the quintessentially German brand. DIAPAL, by the way, is Sinn’s oil-free escapement system that helps a watch work better for a longer time and is denoted by a gray dial on every Sinn watch that utilizes the system.
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