SW510 M MP a

Manual-winding monopusher chronograph with a single push-button at 2 o'clock, displaying hours, minutes, and small seconds at 9 o'clock. Includes a central 60-second chronograph hand, a 30-minute counter at 3 o'clock (optional 15-minute version as SW511 M MP a), and a quick-set date. Features manual winding, stop-second, 28,800 vibrations per hour (4 Hz), 23 jewels, and a 63-hour power reserve.