Cal. No. F158
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A diver watch is often equipped with a rotating bezel.
You can find the elapsed time of diving or remaining time to a target time by minute.
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To prevent accidents, the rotating bezel moves counterclockwise only.
Finding the elapsed time
- Rotate the rotating bezel to set the ◎ mark to the current position of the minute hand.
- Read the position of the scale on the rotating bezel which the minute hand points to find the elapsed time.
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Suppose the position of the ◎ mark as 0 minute.
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15 minutes has passed in the illustration.
Finding the remaining time
- Rotate the rotating bezel to set the ◎ mark to the target time.
- Read the time between the current position of the minute hand and that of the ◎ mark to find the remaining time.
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The target time is set to 20 minutes after the current time in the illustration.