Seiko 6T63A - Features; Stopwatch Function; Measurement Performance; Button Operation

SPECIFICATIONS
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Cal. 6T63A
Cal. 6T63A has a new structure employing one crown and two buttons. The construction of chronograph
mechanism is based on Cal. 8R28 mechanical chronograph watch by using the one-piece 3 pointed reset
hammer. While other Swiss-made watches are using separate hammers which require an assembly and
adjustment of the hammers, the one-piece hammer design realizes maximum durability and stability of
the component and easier maintenance. It is also equipped with the self-alignment function for all counting
hands to return to zero positions instantaneously.
This is the multi-display analogue watch featuring a stopwatch function.
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The time is indicated by the 24-hour, hour and minute hands, and a small second hand.
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The stop watch can measure up to 60 minutes in one second increments. After 60 minutes,
it will stop automatically.
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Measurement performance
Displays the elapsed time with the 2 designated STOPWATCH hands.
Measures up to 60 minutes in one second increments.
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Button operation (Crown position: Normal position)
Button A: START/STOP
Button B: RESET
1. STOPWATCH FUNCTION
Cal. 6T63A
a b c
Hour hand
Minute hand
STOPWATCH 1/5-second hand
STOPWATCH minute
hand
Small second hand
a: Normal position
b: First click
c: Second click
24-hour hand
A
B
CROWN
When pushing the reset button
the HAMMER OPERATING LEVER
B moves automatically to
keep appropriate balance of the
HAMMER position.
CHRONOGRAPH
COUPLING LEVER
HAMMER OPERATING
LEVER A
HAMMER OPERATING
LEVER B
HAMMER HAMMER
HAMMER OPERATING
LEVER B
FEATURES
START
RESET