Seiko Superior 24 Hour Sub-dial

Seiko’s Superior collection defines value in mechanical watches. Each of these nine Superior SSA styles is equipped with Seiko’s 4R37A 24-jewel automatic movement, a frequency of 21,600 beats per hour, and hacking and hand-winding capabilities. Along with a date display at 4 o’clock, each watch features a 24-hour indicator between 9 and 12 o’clock. Offset at about 10 is a large 24-hr sub-dial, which is also multi-layered. The index of the 24-hr dial is set on a ring, which is just below the main dial layer.