GPS: The GPS-3D Sensor uses information gathered from global
positioning satellites (GPS) to calculate your speed, distance, and
elevation, and to track your movements.
Heart Rate Sensor: The Heart Rate Sensor (HR Sensor)
measures your heart rate. The Fitness Sensor User Guide
provides detailed information for setting up and using your HR
Sensor.
The chronograph
As you use this manual to learn about your Watch, the word
chronograph can potentially cause some confusion. Try to remember
this: a chronograph is a tool for measuring time. So, you will
notice a Chronograph Mode, but Vertical and Finish Modes also
operate from the chronograph. Any time your Watch functions as a
timing tool, it operates using chronograph (or timing) functionality.
chronograph
measures time
Chronograph
Mode
Vertical Mode
Finish Mode
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P E R F O R M A N C E W A T C H O V E R V I E W
Watch terminology
The following terms appear throughout this manual. Knowing these
terms will provide you a greater understanding of the information
provided.
Bodylink® System: The Bodylink System allows you to track real-
time data by using Fitness Sensors in conjunction with your
Performance Watch.
Fitness Sensors: The Bodylink System includes two digital
sensors: the Heart Rate Sensor and the Speed + Distance Sensor.
Performance Watch: The Performance Watch, (Watch) houses the
data center for the Bodylink System.
Speed + Distance Sensor: The Speed + Distance Sensor (GPS-
3D Sensor) tracks speed, pace, distance traveled, altitude, location,
and more, using GPS based technology. The Fitness Sensor User
Guide provides detailed instructions for setting up and using your
GPS-3D Sensor.
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