Garmin Forerunner 255 Music

Quick details

Released

June 2022

Dimensions

45.6 x 45.6 x 12.9 mm

Operating system

Garmin proprietary wearable platform

Display 1.3 inch MIP

Battery life Smartwatch mode: Up to 14 days

Water resistance 5 ATM

GPS Yes

Sensors GPS, GLONASS, Galileo, barometric altimeter, compass, gyroscope, accelerometer, thermometer, optical heart rate, Pulse Ox

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Technical specifications

General

Release date June 2022

Product type GPS running and triathlon smartwatch

Physical size 45.6 x 45.6 x 12.9 mm

Weight 49 g

Material Fiber-reinforced polymer bezel and case; silicone strap

Water resistance 5 ATM

Color options Black; Whitestone/Black

Display type Sunlight-visible transflective memory-in-pixel (MIP)

Display size 1.3 inch (33 mm) diameter

Display resolution 260 x 260 pixels

Display protection Corning Gorilla Glass 3

Battery Rechargeable built-in lithium-ion battery

Battery life Smartwatch mode: Up to 14 days; GPS-only: Up to 30 hours; All-Systems GNSS: Up to 25 hours; All-Systems GNSS + Multi-Band: Up to 16 hours; All-Systems GNSS with music: Up to 6.5 hours

Charging Garmin proprietary charging cable

Sensors

GNSS type Built-in multi-band GNSS

GPS Yes

GALILEO Yes

GLONASS Yes

QZSS No

Beidou No

Accelerometer Yes

Gyroscope Yes

Barometric altimeter Yes

Compass Yes

Geomagnetic No

Ambient light sensor No

Optical heart rate Yes

Electrical heart rate No

SpO2 Yes

Temperature Yes

Galvanic skin response No

Microphone No

Speakers No

Vibration motor Yes

Health & activity tracking

Steps Yes

Distance Yes

Calories burned Yes

Floors Yes

Sports tracking Yes

Sleep Yes

Heart rate Yes

HRV Yes

Stress Yes

Blood oxygen Yes

Respiration rate Yes

Skin temperature No

ECG No

Blood pressure No

Body composition No

Glucose No

Hydration level No

UV exposure No

Calorie intake No

Hyperglycemia risk assessment No

Arterial stiffness detection No

Pulse wave arrhythmia analysis No

Daily smart features

Smartphone compatibility iPhone and Android

Operating system at launch Garmin proprietary wearable platform

Storage 4 GB

Bluetooth Yes

Wi-Fi Yes

NFC / connected pay Yes

UWB No

Cellular No

Smartphone notifications Yes

Bluetooth calling No

Smartphone music control Yes

On-board music storage Yes

Voice assistant No

Garmin performance & training

Body Battery Yes

Training Readiness No

Training Status Yes

Training Load Focus Yes

Endurance Score No

Hill Score No

Real-Time Stamina No

Running Tolerance No

Running Economy No

Step Speed Loss No

Performance Condition Yes

PacePro Yes

ClimbPro No

Jet Lag Adviser No

Daily Suggested Workouts Yes

Race Widget Yes

Morning Report Yes

Garmin Coach Yes

Garmin golf

Golf course maps No

Green View No

Hazard View No

Garmin AutoShot No

PlaysLike Distance No

PinPointer No

Touch Targeting No

Virtual Caddie No

Green Contours No

Club tracking compatibility No

Swing Tempo No

Tempo Training No

Garmin tactical

Stealth Mode No

Kill Switch No

Jumpmaster No

Night Vision compatibility No

Applied Ballistics No

Garmin aviation

Direct-to/Nearest airport navigation No

Aviation maps No

METAR/TAF weather No

NEXRAD radar No

Automatic flight logging No

Garmin Pilot flight-plan transfer No

Garmin diving

Dive modes No

Air integration No

SubWave networking No

Dive Readiness No

DiveView maps No

Diver-to-diver messaging No

Garmin marine

Chartplotter connectivity No

Autopilot control No

Fusion-Link No

Boat data streaming No

Tide data No

Garmin ecosystem

Connect IQ Yes

Built-in inReach No

Links

Affiliate link Garmin

These technical specs are correct to the best of our knowledge at the time of publishing.