GST-B100 Series - GSTB100D-1AA G STEEL model equipped with an analog chronograph and a pure stainless steel band designed with a motif of heavy jet engine blades. A dual coil motor in a rotating disc dial placed at 9 o'clock moves the dial blades and exudes a functional beauty. In addition to the alarm on off function and using the rotation to show the stopwatch, etc., it also functions as a battery indicator, The layer guard structure and high density mounting technology have