Heart Rate Sensor - Suunto SPARTAN SPORT 1.2 User Manual

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The pre-defined sport modes that come with your watch generally
use BEST. If the sport mode is intended for long events, the GPS
accuracy is set to Good.
If you navigate a route without starting a recording, the GPS
accuracy is automatically set to Best.

3.11 Heart rate sensor

You can use a Bluetooth® Smart compatible heart rate sensor, such
as the Suunto Smart Sensor, with your Suunto Spartan Sport to get
accurate information about your exercise intensity.
If you use the Suunto Smart Sensor, you also have the added
advantage of heart rate memory. The sensor memory function
buffers data if the connection to your watch is interrupted, for
example, when swimming (no transmission under water).
It also means you can even leave your watch behind after starting a
recording. For more information, please refer to the Suunto Smart
Sensor User Guide.
Without a heart rate sensor, your Suunto Spartan Sport provides
calorie consumption and recovery time for running and cycling
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