movement
Seagull ST1721
winding
Automatic
POWER RESERVE (HOUR)
42
mph
21.600 / 3Hz / 6 Movements Per Second
hacking
No
manual winding
Yes
complication chronograph
No
complication date
Date
complication dual time
No
complication flying tourbillon
No
complication gmt
No
complication jump hour
Yes
complication power reserve
No
complication small second
No
complication sub 24 hour
No
complication sub second
No
complication 2nd bezel timezone
No
complication moonphase
No
complication world time zone
No
complication alarm
No
complication chronoscope
No