Miyota 6S50

The Miyota 6S50 is a quartz chronograph movement manufactured in Japan. It contains no jewels and maintains accuracy within 20 seconds per month. The movement uses an SR927W battery that provides approximately four years of life when the chronograph function is used sparingly; pulling the stem out engages a battery-saving mode. A distinctive feature is the big date display, with documentation provided in English and Chinese to support Chinese factories and American brands. The caliber is used in watches such as the AVI-8 Hawker Harrier II Matador.