Stop Watch

Antimagnetic, Spring Wound, Jeweled Movement In A Robust Plated Steel Case, Corrosion Resistant, Dust And Damp Proof. With Thumb Press Knob At The Top For Start, Stop And Reset Respectively And A Ring For Suspension Through Cord. (0-30 Seconds Main Dial Graduated 1/10 Second And 0-30 Minutes Smaller Dial Graduated Every 1⁄2 Minute.)