Seiko 7B24 Manual page 45

AType
A
Lift up the clasp to release
1
thebuckle.
Takethepinoutoftheadjustmenthole,adjustthe
3
sizeofthestrapbyslidingitbackandforth,andthen
put the pin back into the appropriate adjustment
hole.
Opentheflap.
2
Closetheflap.
4
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