ISA 8172220 Big Date Quartz Watch Movement is a Multi Function Chronograph quartz watch movement. This 11 12 ligne gents chrono movement is 25.60 mm in diameter with a movement height of 3.70 mm. This is 3 hand movement (hour minute chrono 15th second) with 3 indicators and a BIG DATE window at the 12 oclock position. The indicator at the 2 oclock position records 60 seconds, the indicator at the 6 oclock position records the day, the indicator at the 10 oclock position is a 30 minute register. This is a Swiss assembled movement, yellow plates, 3 jewels, uses a 399 battery. The hand dimensions are 150902016 (hour minute center seconds indicators). This is a direct replacement movement for ISAIST 8162220.