6T63 20 Seiko Quartz Watch Movement
- 3 hand chronograph movement (hour/minute/stop watch 1/5th seconds)
- Outside diameter: 30.80 mm
- Thickness: 5.10 mm
- Overall movement height: 7.12 mm
- No jewels
- 394 battery
- Stem part number 351-177, tap 0.90 mm (tap 10)
