MULTI-BAND GPS ➡ Get an even more precise track thanks to multi-band satellite positioning on GPS, GLONASS and Galileo networks. Working simultaneously on multiple frequencies, Forerunner 255 is able to offer greater accuracy, especially in challenging environments like cities and wooded areas. ADVANCED RUNNING FUNCTIONS ➡ In addition to distance and pace during the run, it provides fundamental feedback such as VO2 max, training load, training status and training effect to understand if you are training well, if the sessions are productive and if your fitness level is improving. Not only that, Forerunner 255 also measures running power and heart rate variability (HRV Status). FREE TRAINING PLANS ➡ Through Garmin Coach, after setting your distance and pace goal and number of weekly workouts, you can start a real training plan that will accompany you until race day. If you miss a session, don't worry: Garmin Coach plans adapt to your performance week after week. Forerunner 255 also suggests a WRIST-BASED HEART RATE and SPO2 ➡ Thanks to the LED sensor located on the back of the watch, you can count on heart rate detection directly from the wrist. Active 24/7, it is a fundamental parameter for your running workouts and for monitoring your health during the day. In addition, the Pulse Ox sensor measures blood oxygen saturation for feedback on altitude acclimation and advanced sleep data. COMPLETE SMARTWATCH ➡ View notifications on the display, make contactless payments with Garmin Pay, get tracked in LiveTrack mode and send an emergency text to your predefined contacts with the press of a button or automatically in the event of an accident. Thanks to the built-in music memory, you can listen to your favorite songs at any time, even during workouts, without having to carry your smartphone.