Garmin Forerunner 165 vs Forerunner 255

Garmin Forerunner 165 was released on 20 February 2024. Forerunner 255 was released in June 2022. We compare Forerunner 165 and Forerunner 255 below.

  • Garmin Forerunner 165 uses an AMOLED display screen. Forerunner 255 has an MIP or Memory-in-pixel screen.
  • Forerunner 165 has an in-built touchscreen functionality. Forerunner 255 lacks the touchscreen functionality.
  • Forerunner 255 supports multi-band GPS or dual-frequency GPS. Forerunner 165 does not support multi-band GPS.
  • Forerunner 255 has a better display glass. The display screen comprises Corning Gorilla Glass 3 in a Forerunner 255. Forerunner 165 uses chemically strengthened glass.
  • Forerunner 255 is slightly broader than Forerunner 165.
  • Forerunner 255 offers slightly longer battery backup than Forerunner 165.
  • Forerunner 255 includes a sensor for the gyroscope.
  • Forerunner 165 includes an Ambient light sensor.

We look at these differences in detail below.

Garmin Forerunner 165

Display specificationsForerunner 165 Forerunner 255
Display size30 mm33 mm
Display resolution390 x 390 pixels260 x 260 pixels
Display lensChemically strengthened glassCorning Gorilla Glass 3
Display technologyAMOLED (optional always-on mode)MIP (Memory-in-pixel)
Color displayYesYes
Ambient light sensorYesNo

The important points to note are:

  • Forerunner 255 uses 3rd generation Corning Gorilla Glass.
  • Forerunner 165 uses better display technology of AMOLED.
  • Forerunner 165 has a higher display resolution than Forerunner 255.

The physical specifications of Forerunner 165 and Forerunner 255 are compared below.

Physical specificationsForerunner 165Forerunner 255
Watch size43 x 43 x 11.6 mm45.6 x 45.6 x 12.9 mm
Thickness11.6 mm12.9 mm
Band size20 mm22 mm
Band materialSiliconeSilicone
Recommended wrist circumference126-203 mm130-205 mm
Weight39 g49 g
BezelFiber-reinforced polymerFiber-reinforced polymer
Water rating5 ATM5 ATM
NFC PaymentsGarmin PayGarmin Pay
  • Garmin Pay app is used for making NFC or contactless payments.
  • Both watches use a 5 ATM water resistance rating. This implies both watches are resistant to water pressure at 50 meters of depth under the water’s surface.
  • Forerunner 255 is slightly bigger and thicker than Forerunner 165.

Forerunner 165 and Forerunner 255 support GPS, GLONASS, and Galileo satellite networks. Forerunner 255 supports multi-band GPS or dual-frequency GPS.

The multi-band GPS in Forerunner 255 has been made possible with the introduction of a multi-frequency positioning sensor.

The multi-band GPS allows the smartwatch to fetch GPS data from multiple satellites at any given point in time. This helps in improving GPS accuracy and reliability.

Forerunner 165 standard and music edition do not have a multi-frequency positioning sensor. Therefore, Forerunner 165 cannot support dual-frequency GPS.

Forerunner 255, additionally, uses SatIQ technology to manage multi-band GPS automatically. SatIQ allows Forerunner 255 to toggle on or off the multi-band GPS mode.

SatIQ sensor allows Forerunner 255 to conserver battery backup with optimum usage of the multi-band GPS mode.

Forerunner 255 offers longer battery backup than Forerunner 165. Both watches support fast charging through the Garmin proprietary charger.

Watch modeForerunner 165 Forerunner 255
Smartwatch modeUp to 11 daysUp to 14 days
GPS-Only GNSS modeUp to 19 hoursUp to 30 hours
All-Systems GNSS modeUp to 17 hoursUp to 25 hours
All-Systems GNSS mode in multi-band GPSUp to 16 hours

Garmin Forerunner 165 comes for $249.99. Forerunner 255 has a list price of $349.99. So, the Forerunner 255 is costlier than the Forerunner 165 by $100.

For the additional cost of $100, the Garmin Forerunner 255 affords the following benefits over the Forerunner 165:

  • Multi-band GPS
  • Corning Gorilla Glass 3
  • Better battery backup
  • Touchscreen functionality

Additionally, Forerunner 255 has a higher number of activity profiles than Forerunner 165.

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