Forerunner 255 S Music Noire

General:
Includes 18mm silicone wrist strap
Fits wrists with a circumference of 110 to 175 mm
Lens material: Corning® Gorilla® 3
Bezel material: Fibre reinforced polymer
Display resolution: 218x218 pixels
Display type: Anti-reflective, transflective MIP
Case size : 41mm
Weight: 39g
Water resistance: 5 ATM
Wireless technology: BLUETOOTH and ANT+

Battery life:
Connected watch mode: up to 12 days
GNSS mode, GPS only: up to 26 hours 
GNSS mode, all systems with music: up to 5.5 hours
GNSS mode, all systems: up to 20 hours
GNSS + multi-band mode, all systems: up to 13 hours

Features:
MORNING REPORT: The morning report displays the sleep analysis, VFC status and training suggestion in a single widget every morning when you wake up.

AUTONOMY Up to 14 days in connected watch mode and 30 hours in GPS mode.

STATUS HRV / VFC : HRV or VCF status tracks your heart rate variability while you sleep, giving you a better insight into your general well-being, recovery and training performance.

SPORTS APPLICATIONS : Includes over 30 specific activity profiles, as well as triathlon and multi-activity, so you can switch disciplines at the touch of a button.

RUN WIDGET The run widget provides training advice and daily exercise suggestions, as well as predicting the time of your next run, based on course details, fitness data, weather, etc.

SUGGESTIONS FOR DAILY TRAINING : This unique function provides daily training advice and recommendations for running and cycling based on your HRV/VFC status, your current training status and load, and your recovery level.

RACING POWER : Track the power you apply on the path or on the road when you run in real time and directly from your wrist. Requires the use of a Pod Running Dynamics or HRM-Pro™ cardio belt.

GARMIN PAY™: Secure contactless payment.

Leave your money and cards at home and pay directly with your watch thanks to Garmin Pay™ .

MULTI GNSS & MULTI BANDS : Access several global satellite navigation systems (GPS, GLONASS, GALILEO) and obtain unrivalled GPS positioning accuracy in urban or steep areas, thanks to the new Multi-band, dual-frequency positioning technology.

TRAINING STATUS: Assesses training status and indicates whether you are under-training, over-training or in a productive period. Also provides additional tips for progress.

CHARGE7 JOURS/ACUTE LOAD : Compare the intensitý of your most recent training sessions against your optimum performance range. This is determined by the history of your activities and your level of performance.

RUNNING DYNAMICS (stride analysis) : Analyses your stride and records essential information such as cadence, stride length, ground contact time and right/left leg balance, etc. Requires the use of a compatible HRM belt or Running Dynamics Pod.

GARMIN COACH : Are you training for a 5km, 10km or half marathon? Download a made-to-measure Garmin Coach training plan that adapts to your schedule and physical abilities - for free!

CONNECTED FUNCTIONS: Incorporates all the latest Garmin connected features, including smart notifications, automatic uploads to Garmin Connect™ and LiveTrack real-time tracking.

SAFETY DEVICES : If you feel unsafe or your watch detects that an incident has occurred, the assistance and incident detection features send a message with your location to your emergency contacts so they can more easily come to your aid.

BODY BATTERY™: Optimise your body's energy reserves, using heart rate variability, stress, sleep and other data to assess your fitness level or when you should rest.

MUSIC ON YOUR WRIST WITHOUT A PHONE : Download up to 500 songs to your watch, including playlists from Amazon Music, Deezer or Spotify (a premium subscription may be required), and connect to your wireless headphones for phone-free listening (Music models only).