Garmin Forerunner 255 GPS Smartwatch (Slate Gray)

How accurate is the GPS tracking on the Forerunner 255?

The Forerunner 255 uses multi-band GPS technology that accesses multiple satellite systems including GPS, GLONASS and Galileo. This provides exceptional accuracy, typically within 1-2 metres under open sky conditions. The multi-frequency positioning helps maintain accuracy even in challenging environments like dense urban areas or heavily wooded trails where standard GPS might struggle.

Can I use the watch for swimming and water sports?

Yes, the Forerunner 255 has 5 ATM water resistance, making it suitable for swimming, showering and water sports. It includes dedicated swimming profiles for pool and open water swimming, tracking distance, pace, stroke count and SWOLF scores. The watch automatically detects your swimming stroke type and provides detailed metrics for improving your technique.

How does the music storage feature work?

The watch can store up to 500 songs directly on the device, allowing you to listen to music during workouts without carrying your phone. You can transfer music from your computer or sync playlists from compatible streaming services like Spotify, Amazon Music, or Deezer. Connect Bluetooth headphones to the watch for wireless audio during activities.

What health metrics does the watch monitor continuously?

The Forerunner 255 monitors heart rate 24/7, tracks sleep stages and provides sleep scores, measures blood oxygen levels with Pulse Ox, monitors respiration rate and calculates stress levels. It also tracks Body Battery energy levels throughout the day and provides HRV (Heart Rate Variability) status to help you understand your body's readiness for training and recovery needs.

How long does the battery last during different activities?

Battery life varies depending on usage: up to 14 days in smartwatch mode, up to 30 hours in GPS-only mode, up to 25 hours with all satellite systems active and up to 6.5 hours when using GPS with music playback. The battery saver mode can extend usage even further by reducing certain features and display brightness.

Is the watch compatible with both iPhone and Android devices?

Yes, the Forerunner 255 works with both iPhone and Android smartphones through the Garmin Connect Mobile app. You'll receive smart notifications including calls, texts, emails and app alerts directly on your watch. The level of integration may vary slightly between platforms, with some features like LiveEventSharing currently available only on Android devices.

What training features are included for runners?

The watch includes advanced running features such as wrist-based running power, VO2 max estimation, recovery advisor, training load balance, race predictor and PacePro pacing strategies. It provides daily suggested workouts based on your fitness level and training history, plus adaptive training plans that adjust based on your performance and recovery status.

Can I customise the watch faces and add apps?

Yes, through Garmin's Connect IQ store, you can download thousands of free and paid watch faces, data fields, widgets and apps. This allows you to personalise your watch interface and add functionality for specific sports or activities. Popular additions include weather widgets, tide charts, golf course maps and specialised training apps.