The newest version of the A. Lange & Söhne Zeitwerk Striking Time has a rose-gold case and hands and a silver dial. Unlike most repeaters and other chiming watches, it has its chiming mechanism integrated into the dial design. The black-polished steel hammers are located on either side of the large small-seconds subdial at 6 o’clock. 
The hammer on the right strikes the quarter hours and the one on the left, the full hours. The two gongs, embedded in a recess between the dial and the bezel, are also visible from the dial side. Every 15 minutes, the mechanism triggers the striking of one of the gongs — three high-pitched chimes for each quarter hour and one low-pitched chime for the top of every full hour.
The watch has a device that can deactivate the chiming mechanism whenever the owner wishes to not be disturbed by it: Simply press the push-piece at 4 o’clock and the hammers raise away from the gongs and hold in place, thus silencing the watch.
source:watchtime.com
