men's mechanical watches with tourbillon display -HANHART TACHYTELE OFF-WHITE 712.200-6428 CALFSKIN LEATHER MEN WATCH

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The PIONEER TachyTele features in addition to the stop function two practical scales which are easily readable against the dial, thanks to their red finish: the tachymeter scale for measuring average speeds is incorporated in the centre of the dial in a spiral formation. As this scale allows for a total of three revolutions of the stop indicator hand, it considerably extends the measurement range, enabling even relatively slow speeds of 60 km/h down to 20 km/h to be measured. The telemeter scale, which is printed on the peripheral edge of the dial, is used for measuring distances, taking into account the speed of sound.