Citizen Men's Watch, Citizen Collection Mechanical Classic Open Heart NH9110-90LProduct Highlights Shell Point Experience the delicate movement of the balance wheel, the heart of a mechanical watch, from the 7 o'clock position with the open heart design. The vertically drawn pattern from 12 o'clock to 6 o'clock creates a classic impression. Shell Point Experience the delicate movement of the balance wheel, the heart of a mechanical watch, from the 7 o'clock position with the open heart design. The vertically drawn pattern from 12