Tissot watch prs516 automatic chronographtissot prs 516 series takes time to reflect on its 1960s motorsport inspired originswearers of the tissot prs models are equipped with timepieces integrating the innovations in swiss watchmaking to complement nostalgic design elements from the racetrackon some of these models the movement can be seen in action through the distinctive case back shaped like the steering wheel of a pioneering sports carsupplier model numbert1004273620100