
Manual-winding cam-actuated chronograph with two push-buttons, indicating hours and minutes. Equipped with a central 60-second chronograph hand, a 30-minute counter at 3 o'clock (optional 15-minute version available as SW511 M BH c), and a quick-set date. Features manual winding, a stop-second mechanism, 28,800 vibrations per hour (4 Hz), 23 jewels, and a 63-hour power reserve.
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