Tissot Pr516 41mm"First introduced in the 1960s, the PR516 was inspired by the high speed world of car racing. As Tissot expands the PR516 line, it continues to fuel the spirit of those who seek a timepiece as relentless as their pursuitsdriving them to face challenges head on, just like the heroes who wear it. The Valjoux chronograph, tachymeter, and pulsometer work in unison, and are built to capture every beat when life feels exhilarating. With speed and heart rate
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