Sinn watch ezm 3f rubber the sinn pilot watch ezm 3f is a classic looking pilots watch with a stroke of magic a countdown bezel and a magnetic force protection add to the timepieces appeal reinforcing its protective ability as well as its functionality the clever design of the ezm 3f allows the wearer greater freedom of movement and thus ease of use with the location of the crown being on the left hand side of the bead blasted case wall the watch is equipped with ar dehumidifying technolog