Manual winding
9S64
Static +5~-3
Actual +10~-1
so far these 4 months, i'm tracking it between 2.1 - 9.2
recently consistently around 7.5 - 7.7
I've emailed seiko JP and they say its within specs of +10~-1
got too many mechnical watches to manage now, so I let it run to a stop when not wearing, which is why I prefer watches that can manual wind, and not those that are automatic only
http://www.grand-seiko.com/movement/mechanical.php#tabContent03
next servicing ask them to try tune it for +5/6 sec specs lah then you get a solid manual winding watch.
for 7 seconds you getting a very solid manual wind watch




