Seiko 5D22 Instructions Manual page 9

. Continue to turn the crown to sufficiently charge the watch.
The direct drive indicator hand moves up and down to display the electric power generation
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status.
When you stop turning the crown, the indicator hand displays the amount of power generat-
✽
ed by the current manual winding for approximately 4 seconds, and then the hand returns to
display the total amount of power reserve. Charge the watch until the indicator hand points
at the second marking above "0"(approximately 6 hours of power reserve).
This watch will keep on operating for approximately 1 month (30 days) if it is fully charged.
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However, it is not necessary to charge the watch fully, as it is charged automatically while it
is worn on your wrist.
Refer to "How to read the direct drive indicator" for further details.
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Power generation
status display
Generated power
amount display
Power reserve display