FS20 Miyota Quartz Movement is a chronograph movement with 3 hands in the center (hour/minute/seconds), 3 indicators, and a date window at 3 OR 6. This movement is a 0 jewel movement, 10 1/2 ligne round, 23.70 mm x 22.00mm with a movement thickness of 5.10 mm. Overall height is 6.89 mm. The indicator at 2 o'clock records 24 Hours, the indicator at 6 o'clock records 60 seconds and the indicator at 1 o'clock records minutes. Pushers are slanted for a round 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).