Sinn Watch 144 St Sa Bracelet. The 144 St Sa is made of a compact stainless steel case with sapphire crystal glass in front and back. Other features include a chronograph display with 12 hour counter, jumping 30 minute counter and a stopwatch second hand in the center. All this is complemented by the tachymeter, pulsometer scale and a date display that also shows the weekday.
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