Garmin Forerunner 55: full spec sheet and buying guide
The Garmin Forerunner 55 is a GPS running watch, focused on training rather than notifications or style. This page summarizes its features based on its official spec sheet and public buyer ratings on Amazon.

GPS for running, up to 2 weeks of battery life in watch mode, and daily suggested workouts.
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GPS and accuracy
According to its spec sheet, it uses GPS to measure distance, pace, and route while running, together with the wrist-based heart rate sensor (Garmin notes it is not a medical device). It includes the PacePro feature, offering GPS-based pace guidance for a specific route or distance.
Training and activities
It offers daily suggested workouts based on your history, fitness level, and recovery, plus race time predictions. It includes built-in activity profiles for running, cycling, track, virtual running, pool swimming, pilates, HIIT, and more.
Battery and customization
The manufacturer states up to 2 weeks of battery life in smartwatch mode, and up to 20 hours with GPS active. It can be customized with watch faces, widgets, and free apps from the Connect IQ store, using the Garmin Connect app on your phone.
Strengths based on its spec sheet
- Built-in GPS, no need to rely on your phone to measure distance and pace
- Up to 2 weeks of battery life in watch mode
- Suggested workouts and race time prediction
- Customizable through the Connect IQ store
What to consider before buying
- With GPS active, battery life drops to about 20 hours, not the advertised 2 weeks
- It's more focused on running than on notifications or calls
- The wrist heart rate sensor is not a medical device, according to the manufacturer itself
Want to compare this model with other wearables? Check out our wearables buying guide.
Who is it ideal for?
Based on its spec sheet, it's a good fit for anyone who runs fairly regularly and wants built-in GPS, guided workouts, and solid battery life without needing all the "smart" features of a watch more geared toward notifications.
Who is it NOT the best option for?
If you're looking for a watch focused on notifications, calls, or a broad app ecosystem (like an Apple Watch or Wear OS device), it's worth comparing with other options before deciding.
Frequently asked questions
Does it have built-in GPS?
Yes, it measures distance, pace, and route with built-in GPS, without relying on your phone.
How long does the battery last with GPS active?
According to the manufacturer, up to 20 hours with GPS in continuous use.
Can it be used for swimming?
Its spec sheet includes an activity profile for pool swimming, among other sports.

Does the Garmin Forerunner 55 sound like the right fit for you?
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