FS21 Miyota Quartz Movement is a chronograph movement that measures 10 1/2 ligne round, 23.70 mm x 22.00 mm with a movement thickness of 5.10 mm. The overall height is 6.89 mm. This movement has 3 hands in the center (hour/minute/seconds), 3 indicators, and a date window at 4H30 suspended. The indicator at 2 o'clock records 24 hours, the indicator at 6 o'clock records 60 seconds and the indicator at 10 o'clock records minutes. Pushers are parallel for a straight walled case. Hole sizes: 120/70/17/26 (hour/minute/seconds/indicators). Uses a 377 battery. Stem use part number 065-549 (tap 0.90 mm/ tap 10).