Mechanical Stop Watch, SXJ504 Handheld Sports Chronograph Alarm Mechanical Stopwatch Running Timer, for Sports Referee Running Cycling Count Timer

The watch machine adopts stainless steel spring, single metal light balance wheel, nickel base alloy hairspring and kelleg vertical mechanism.
One button function, starts, stops and returns to zero by consecutive crown depressions.Durable, dust, water, shock and corrosion resistant.
Useful for rest in exercise; Metronome funcion, Grasp all the rhythms in the sports, useful for Fitness gymnastics.
The movement is equipped with 13 gems ,The watch machine can be used at -10°C~+40°C
Durable, dust, water, shock. Resolution ratio(1/10s), Size about 50 x 68 x 16mm.