Seiko SSC669 Owner Manual - Page 13

Rotating Bezel, Tachymeter

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English ROTATING BEZEL The rotating bezel can show the elapsed time up to 60 minutes. By setting it before diving, you can know how many minutes you are underwater. To prevent accidental rotation, the rotating bezel is so designed that rotation becomes harder in water. Also for saf ty's sake, it roatates only counterclockwise, so that the time measured is never shorter than the actual elapsed time. 1. Turn the rotating bezel to align its " " mark with the minute hand. * The rotating bezel rotates with clicks. With each click, it turns half a minute. 2. To know the elapsed time, read the number on the rotating bezel that the minute hand points to. Example: Start(10:10 AM) " " mark Minute hand "30" on rotating bezel 30 minutes have elapsed. Bezel rotation may become slightly stiffer underwater. This is not a malfunction. 24 English TACHYMETER (for models with tachymeter scale on the dial) To measure the hourly average speed of a vehicle 1 Use the stopwatch to determine how many seconds it takes to go 1 km or 1 mile. 2 Tachymeter scale indicated by the STOPWATCH 1/5-second hand gives the average speed per hour. Ex. 1 STOPWATCH 1/5- second hand: 40 seconds Tachymeter scale: "90" "90" (tachymeter scale figure) x 1 (km or mile) = 90 km/h or mph l Tachymeter scale can be used only when the time required is less than 60 seconds. Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles and the STOPWATCH 1/5-second hand indicates "90" on tachymeter scale: "90" (tachymeter scale figure) x 2 (km or mile) = 180 km/h or mph "90" (tachymeter scale figure) x 0.5 (km or mile) = 45 km/h or mph 25

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25
English
English
24
ROTATING BEZEL
The rotating bezel can show the elapsed time up to 60 minutes.
By setting it before
diving, you can know how many minutes you are underwater.
Start(10:10 AM) "
" mark
30 minutes have elapsed.
"30" on rotating bezel
1.
Turn the rotating bezel to align its "
" mark with the minute hand.
* The rotating bezel rotates with clicks.
With each click, it turns half a minute.
2. To know the elapsed time, read the number on the rotating bezel that the
minute hand points to.
To prevent accidental rotation, the rotating bezel is so designed that
rotation becomes harder in water.
Also for safty's sake, it roatates only
counterclockwise, so that the time measured is never shorter than the actual
elapsed time.
Minute hand
Example:
Bezel rotation may become slightly stiffer underwater. This is not a malfunction.
TACHYMETER
(for models with tachymeter scale on the dial)
l
Tachymeter scale can be used only when the time required is less than 60 seconds.
TO MEASURE THE HOURLY AVERAGE SPEED OF A VEHICLE
Use the stopwatch to determine
how many seconds it takes to
go 1 km or 1 mile.
Tachymeter scale indicated by
the STOPWATCH 1/5-second
hand gives the average speed
per hour.
Ex. 1
STOPWATCH 1/5-
second hand:
40 seconds
Tachymeter scale:
"90"
“90” (tachymeter scale figure) x 1 (km or mile)
= 90 km/h or mph
Ex. 2:
If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or
miles and the STOPWATCH 1/5-second hand indicates “90” on tachymeter scale:
"90" (tachymeter scale figure) x 2 (km or mile) = 180 km/h or mph
"90" (tachymeter scale figure) x 0.5 (km or mile) = 45 km/h or mph
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