Acumen Hydra-Alert HRM Heat Index Mode, Stopwatch Mode, Interval Timer Mode, Free Training Mode

2.4 Heat Index Mode

● Press "EL" to activate the

NiteLite.

● Press " MODE " to advance to Stopwatch Mode.

Note: When the Heat Index is shown and its current value is at a very high level, the watch will alert you by switching between the Heat Index values and warning messages. The warning messages include Care, Ultra Care, Danger and Ultra Danger (Refer to page 31 for additional details).

2.5 Stopwatch Mode

Press "STR" to start the stopwatch.

	● Press "EL" to activate the NiteLite.
	● Press "STR" to start the stopwatch
	● Press "MODE" to advance to
	Interval Timer Mode.
	● Press "EL" to activate the NiteLite.
When the stopwatch	● Press "STOP" to stop the stopwatch
is running	● Press "MODE" to advance to
	Interval Timer Mode.
	● Press "EL" to activate the NiteLite.
	● Press "STR" to start the stopwatch
When the stopwatch	● Press "CL" to reset the stopwatch
is stopped	and return to stopwatch mode
	● Press "MODE" to advance to Interval
	Timer Mode.

2.6 Interval Timer Mode

Press " " to see the set information about Interval Timer.

●Press "EL" to activate the NiteLite

●Press & hold "" to turn On / Off the

Interval Timer.

●Press " " to enter Interval Timer

Mode.

●Press "MODE" to advance to Free Training Mode.

In Interval Timer Mode, you can view Timers’ different information:

Timer 1

	● Press "EL" to activate the NiteLite
	● Press & hold " " to turn On / Off the
	Interval Timer.
	● Press "NXT" to advance to next
	item.
Timer 2	● Press "EXIT" to return to Interval
	Timer Mode.
Timer 3

Note 1: All three Timers will be turned On or Off simultaneously, so if you just want to adjust one or two of the Timers, then you should set the time of the other Timers to zero in Set Mode. The Timer will not be activated when it is set to zero.

Note 2: When the Interval Timer starts, it will replace the Stopwatch.

2.7 Free Training Mode

Before you begin training, make sure you have synchronized the Heart Rate

Transmitter with the watch. Press “STR” to start free training and enter the Total

Time of free training.

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