Garmin Forerunner 255

Garmin Forerunner 255

Brand: Garmin
Category: Wearables
  • Screen 1.1 inch MIP | 1.3 inch MIP
  • Battery life up to 14 days
  • Water resistance 5 ATM (50 metres)
  • Sensors GPS/GLONASS/GALILEO, compass, barometric altimeter, accelerometer, thermometer, heart rate, Pulse OX, GPS
  • Date June 2022



Physical size 255 (41 x 41 x 12.4 mm) | 255s (45.6 x 45.6 x 12.9 mm)
Material Lens material: Corning® Gorilla® Glass 3. Bezel and case material: fiber-reinforced polymer
Charging USB
Battery Rechargeable lithium-ion
Battery life 255 (14 days in smartwatch mode, 6.5 hours GPS + Music, 30 hours in GPS mode). 255s (12 days in smartwatch mode, 6.5 hours GPS + Music, 26 hours in GPS mode)
Water resistance 5 ATM
Weight 39g | 49g
Display type Sunlight-visible, transflective memory-in-pixel (MIP). Touch-enabled. Solar option.
Display size 1.1" (27.9mm) | 1.3" (33mm)
Display resolution 218 x 218 pixels | 260 x 260 pixels
Color options 255 (Slate Grey/Black, Dark Blue/Black), 255s (Light Grey/Black, Dusty Pink/Black), 255 Music (Black, Stone white/black), 255s Music (Black, Stone white/black)


Accelerometer Yes
Barometric altimeter Yes
Compass Yes
Galvanic skin response No
Geomagnetic No
Gyroscope Yes
Optical heart rate Yes
Electrical heart rate No
SpO2 Yes
Temperature No
Beidou No
Ambient light sensor No
Vibration motor Yes
Microphone No
Speakers No

Health & activity tracking

Steps Yes
Distance Yes
Calories burned Yes
Sports tracking Yes (30+)
Floors Yes
Sleep Yes
Heart rate Yes
Stress Yes
Blood oxygen Yes
Respiration rate Yes
UV exposure No
Skin temperature No
Hydration level No
Calorie intake No
Blood pressure No
Glucose No
Other HRV status, Running power on the device (with compatible accessory), Competition widget, Multi frequency reception, Morning report

Daily smart features

Smartphone notifications Yes
Smartphone music control Yes
On-board music storage Yes (500 songs optional)
Connected pay Yes
Cellular No
Connectivity Bluetooth, ANT+
Operating system Proprietary
Memory 200 hours of activity data


Affiliate link Amazon | Garmin
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