SW530 a

Cam-actuated chronograph with two pushers. Displays hours, minutes, small seconds at 9 o'clock, a central 60-second hand, a 30-minute counter at 12 o'clock (optional 15-minute version), a 12-hour counter at 6 o'clock, and a central 24-hour GMT hand. Includes quick-set date and GMT, ball-bearing automatic winding, stop-seconds, 28,800 vph, 25 jewels, and a 62-hour power reserve.