|Lens Material||Corning Gorilla Glass 3|
|Bezel Material||fiber-reinforced polymer|
|Quick Release bands||(22 mm, Industry standard)|
|Physical size||45.6 x 45.6 x 12.9 (mm)
Fits wrists with a circumference of 130-205 mm
|Display Size||1.3" (33 mm) diameter|
|Display resolution||260 x 260 pixels|
|Display Type||sunlight-visible, transflective memory-in-pixel (MIP)|
|Battery life||Smartwatch mode: Up to 14 days
GPS-only GNSS mode: Up to 30 hours
All-Systems GNSS mode with music: Up to 6.5 hours
All-Systems GNSS mode: Up to 25 hours
All-Systems GNSS mode plus Multi-Band: Up to 16 hours
|Water rating||5 ATM|
TUNE YOUR TRAINING
Add a beat to your step. Get the training and recovery insights you need to run at a higher level — plus music to motivate you along the way.
Get an overview of your sleep, HRV status and daily workout with morning report.
Charge less, train more with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.
Push your limits with a built-in triathlon feature and 30+ activity profiles.
Plan your strategy with daily suggested workouts, course details and more on the race widget.
Utilize a full suite of advanced metrics and training tools to reach your goals.
READY FOR THE LONG RUN
Get an uninterrupted picture of your daily health and nightly sleep with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.
AS LIGHT AS A FEATHER
With its sleek design and 49g weight, you’ll almost forget you’re wearing Forerunner 255 Music — even when you’re asleep.
Featuring easy-to-use buttons and a silicone band, this watch is ready to wear — and tear — with durable Corning Gorilla Glass 3.
Receive an overview of your sleep, recovery and training outlook as soon as you wake up — alongside HRV status and weather. You can even customize your report to show you what you want to see.
Gain a deeper understanding of your overall health, recovery and training performance through heart rate variability while you sleep, based on technology developed by our Firstbeat Analyticsteam.
BUILT-IN SPORTS APPS
Tap into 30+ built-in activities, including the triathlon and open-water swimming profiles — new to the Forerunner 255 series. For races and brick workouts, transition to the next activity with a single button press.
Get ready for your next race with training tips, personalized daily suggested workouts and completion time predictions based on course details, weather and performance.
DAILY SUGGESTED WORKOUTS
View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery as well as the races coming up in your Garmin Connectsmartphone app calendar.
Free adaptive training plans include 5K, 10K and half-marathon programs, featuring guidance from expert coaches that adapt to you and your goals.
When using a Running Dynamics Pod or HRM-Promonitor, get a continuous measurement on your wrist of how much power you’re applying to the road as you run, so you can manage your effort.
Know how long to recover before your next high-effort workout based on your latest training as well as overall stress, sleep and daily activities outside of workouts.
To help you plan your race day strategy, this feature offers GPS-based pace guidance for a selected course or distance, so you can tailor your efforts to what’s ahead.
Using new indicators such as HRV status, your recent exercise history and performance, get an easy insight into your overall effort — and whether you’re training productively, peaking or strained.
See your training history, and compare the intensity of your recent workouts to the optimal range to help improve your fitness.
See how your workouts influence your endurance, speed and power with aerobic and anaerobic training effect feedback.
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