Seiko 9R02 is a modern manual winding spring drive caliber from Seiko. It has a high power reserve of 84 hours.
The accuracy is ±1 second per day (±15 seconds per month).
Ø ? mm, H ? mm
with two mainsprings arranged in parallel in one barrel; torque-return system.
Power reserve 84 h
seiko_9r02.txt · Last modified: 13.12.2021 17:45 by gerdlothar