The Junghans Pilot Chronoscope 27/3591.00 brings aviation heritage into a rugged automatic chronograph with a black luminous dial, bi-directional turning bezel, and riveted leather strap. It is 43.3mm stainless steel round round case houses the self-winding J880.4 calibre with stop function, 30-minute counter, small seconds, sapphire crystal, and 100m water resistance.