With the 2011 introduction of the Ingenieur Double Chronograph Titanium, IWC paired its famous ‘Double Chronograph’ with the distinctive and robust Ingenieur case. For this IW3865-01, the case was done in titanium. The bezel screws had received an ADLC coating, while the pushers, crown and their protectors had received a rubber coating.

Titanium case with a black rubber strap. Fixed titanium bezel. Silver dial with grey hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Day of the week and date display at the 3 o’clock position. Chronograph – three sub-dials displaying: 60 second, 30 minute and 12 hour. Automatic movement with a 44 hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 45 mm. Case thickness: 16 mm. Round case shape. Tang clasp. Water resistant at 120 meters / 400 feet. Functions: hours, minutes, seconds, date, calendar, split-second chronograph with flyback function. Luxury watch style. Watch label: Swiss Made. IWC Ingenieur Double Chronograph Silver Dial Rubber Strap Automatic Men’s Watch IW386501.

A split-seconds hand or rattrapante is an additional seconds hand on mechanical chronographs. The split-seconds hand, which runs underneath the stopwatch hand, can be stopped independently using a push-button at “10 o’clock”, while the stopwatch hand continues to run. This allows the user to record two separate times, precisely to the second, within any given minute. If the third push-button is pushed again, the split-seconds hand instantaneously catches up and is synchronized with the stopwatch hand. It is then possible to record a new intermediate time.

Also known as: IWC IW386501, IW3865-01, 3865-01