SW500 M b

Cam-actuated manual chronograph with two pushers, featuring hours, minutes, and small seconds at 9 o'clock. Includes a central 60-second hand, a 30-minute (or optional 15-minute) counter at 12 o'clock, a 12-hour register at 6 o'clock, and a quick-set date. Built with 21 jewels, a 4 Hz frequency, stop-second mechanism, and a 63-hour power reserve.