Rugged and solid with the precise details and movements that make Swiss Army famous and keeps you moving smoothly along schedule... introducing the Swiss Army Ground Force Mechanical Self-Winding collection. Sophisticated black dial is accented by large, bold luminous hands and markers, a date display at the '4' marker and presented by a titanium and stainless steel case with a screw-down crown and caseback. Handsome black rubber strap is grooved with a block design. Precise automatic, self-winding movement with 1/10th of a second chronograph movement features a tachometer. Anti-reflective sapphire crystal and water resistant to 100m.