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Zenith Defy El Primero 21: Chronograph Timing to 1/100th Second | WatchTime - USA's No.1 Watch Magazine
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1/100 Second Digital Sports Stopwatch Timer High Accuracy Digital Chronograph with 12/24 Hour System for Sport Referee
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Zenith Defy El Primero 21: Chronograph Timing to 1/100th Second | WatchTime - USA's No.1 Watch Magazine
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