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The watch determines the battery level status and
provides the user with a visual indication corresponding
to the current battery level. The battery level status is
classified as Normal Level, Battery Low Level, and Replace
Battery Level, with each level indicated by the movement
of the second hand.
For the Normal Level status, the second hand shall move one
hand position every one second, which is its normal operation.
When the watch is in Battery Low Level status, the second
hand shall only move at 2-second intervals and shall
move by two hand positions. It is recommended that the
user replace the battery when the watch is at Battery Low
Level status.
When the watch is in Replace Battery Level status, the
second hand shall only move at 5-second intervals and
shall move by five hand positions. At this point, depth
sensor can not be activated, and the user must replace
the battery immediately.
The tachymeter will only determine speeds greater than
60 units per hour using this method; slower speeds can
be measured by decreasing the unit of measurement.
The function performed by a tachymeter is independent
of the unit of distance (e.g. statute miles, nautical miles,
kilometers, meters etc.) as long as the same unit of length
is used for all calculations.
1. Determine the start and finish markers for your
pre-determined distance.
2. Start the chronograph once the target for speed
measurement passes the start marker.