Citizen Men's Watch - Citizen Collection Mechanical Open Heart NH9131-14EProduct Highlights Experience the delicate movement of the balance wheel, the heart of a mechanical watch, through the open heart design at 6 o'clock on the dial of this classically modern timepiece. The radial pattern on the dial emanating from a circular window gives this watch a distinctive look. The transparent case back allows you to admire the oscillating weight and inner workings of the movement. Product Overview A classically modern mechanical