Tissot PR516 41mmDiameter: 41 mm 316L stainless steel case See through caseback Swiss automatic movement Scratch resistant sapphire crystal with antireflective coating Interchangeable quick release bracelet 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