IWC · Automatic

5011

The first of IWC's seven-day Pellaton automatics, built in 2002 and 2003 for the Big Pilot's Watch reference 5002. The barrel actually holds around eight and a half days, but the movement is stopped mechanically at 168 hours so the rate never runs out on weakening torque. A screw balance with sixteen adjusting screws regulates it, and the mainspring turns close to fourteen revolutions fully wound.