FORERUNNER 255 SERIES Owner’s Manual

Wireless Sensors

Your watch can be paired and used with wireless ANT+ or Bluetooth sensors (Pairing Your Wireless Sensors). After the devices are paired, you can customize the optional data fields (Customizing the Data Screens). If your watch was packaged with a sensor, they are already paired.

For information about specific Garmin sensor compatibility, purchasing, or to view the owner’s manual, go to Garmin.com.sg/buy for that sensor.

Sensor Type	Description
eBike	You can use your watch with your eBike and view bike data, such as battery and shifting information, during your rides.
Extended Display	You can use the Extended Display mode to display data screens from your Forerunner watch on a compatible Edge device during a ride or triathlon.
External HR	You can use an external heart rate monitor, such as the HRM-Pro or HRM-Dual, and view heart rate data during your activities. Some heart rate monitors can also store data or provide running dynamics information (Running Dynamics).
Foot Pod	You can use a foot pod to record pace and distance instead of using GPS when you are training indoors or when your GPS signal is weak.
Headphones	You can use Bluetooth headphones to listen to music loaded onto your Forerunner watch (Connecting Bluetooth Headphones).
Lights	You can use Varia smart bike lights to improve situational awareness.
Power	You can use a power meter, such as Rally and Vector, to view your power data on your watch. You can adjust your power zones to match your goals and abilities (Setting Your Power Zones), or use range alerts to be notified when you reach a specified power zone (Setting an Alert).
Radar	You can use a Varia rearview bike radar to improve situational awareness and send alerts about approaching vehicles. With a Varia radar camera tail light, you can also take photos and record video during a ridexref using varia.
RD Pod	You can use a Running Dynamics Pod to record running dynamics data and view it on your watch (Running Dynamics).
Smart Trainer	You can use your watch with an indoor bike smart trainer to simulate resistance while following a course, ride, or workout (Using an ANT+® Indoor Trainer).
Tempe	You can attach the tempe temperature sensor to a secure strap or loop where it is exposed to ambient air, so it provides a consistent source of accurate temperature data.

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Wireless Sensors

Your watch can be paired and used with wireless ANT+ or Bluetooth sensors (Pairing Your Wireless Sensors). After the devices are paired, you can customize the optional data fields (Customizing the Data Screens). If your watch was packaged with a sensor, they are already paired.

For information about specific Garmin sensor compatibility, purchasing, or to view the owner’s manual, go to Garmin.com.sg/buy for that sensor.

Sensor Type	Description
eBike	You can use your watch with your eBike and view bike data, such as battery and shifting information, during your rides.
Extended Display	You can use the Extended Display mode to display data screens from your Forerunner watch on a compatible Edge device during a ride or triathlon.
External HR	You can use an external heart rate monitor, such as the HRM-Pro or HRM-Dual, and view heart rate data during your activities. Some heart rate monitors can also store data or provide running dynamics information (Running Dynamics).
Foot Pod	You can use a foot pod to record pace and distance instead of using GPS when you are training indoors or when your GPS signal is weak.
Headphones	You can use Bluetooth headphones to listen to music loaded onto your Forerunner watch (Connecting Bluetooth Headphones).
Lights	You can use Varia smart bike lights to improve situational awareness.
Power	You can use a power meter, such as Rally and Vector, to view your power data on your watch. You can adjust your power zones to match your goals and abilities (Setting Your Power Zones), or use range alerts to be notified when you reach a specified power zone (Setting an Alert).
Radar	You can use a Varia rearview bike radar to improve situational awareness and send alerts about approaching vehicles. With a Varia radar camera tail light, you can also take photos and record video during a ridexref using varia.
RD Pod	You can use a Running Dynamics Pod to record running dynamics data and view it on your watch (Running Dynamics).
Smart Trainer	You can use your watch with an indoor bike smart trainer to simulate resistance while following a course, ride, or workout (Using an ANT+® Indoor Trainer).
Tempe	You can attach the tempe temperature sensor to a secure strap or loop where it is exposed to ambient air, so it provides a consistent source of accurate temperature data.