Sinn reissues the Model R500, a racing-specific stopwatch that has been updated in lightweight titanium for its 2020 collection. The watch features a 42mm satin-finish bullhead titanium case that houses the always dependable Valjoux 7750 automatic movement. The watch also features a chronograph with an integrated tachymeter scale that goes up to 500 km/h, a power reserve indicator at 12 o'clock, and a matte black dial with lume-coated indexes and hands. 

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