WatchFitTool
Garmin Forerunner 55 — case dimensions and design

Garmin · 2021

Forerunner 55Size, Dimensions & Wrist Fit

Case Width

42mm

Thickness

11.6mm

Diameter

42mm

Weight

37g

The Garmin Forerunner 55 sits best on flat wrist widths of about 44–60mm (≈ 11.7–16.0cm wrist circumference). Adjust the slider below to check your wrist.

Check Wrist FitCompare

Does the Forerunner 55 fit your wrist?

Drag the slider to your wrist width and see the Forerunner 55 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.

For sports watches, Lug-to-Lug (L2L) is what matters most. Bulky is fine — overhang is not.

mm
40.0mm (small)85.0mm (large)
How to Measure
1

Lay arm flat, palm up.

2

Measure the flat width across top of wrist.

Wrist Width Measurement Guide →
Garmin Forerunner 55
Case: 42mmL2L: 42mmThick: 11.6mm
Edge Clearance
+6.5mm
Balanced Fit6.5mm clearance. Comfortable everyday wear with room to spare.

Compare the Forerunner 55 with…

vs Garmin fēnix® 7S Pro – Sapphire Solar Editionvs Garmin fēnix® 7S Pro – Solar Editionvs Garmin epix™ Pro (Gen 2) – Sapphire Edition | 42 mmvs Garmin epix™ Pro (Gen 2) – Standard Edition | 42 mm

Garmin Forerunner 55 Full Specifications

Design22
width42
height42
volume20.46 cm³
weight37 g
thickness11.6
ATM rating5 ATM
resolution208 x 208 px
screen size1 inches
Display typeLCD
Has a displayYes
pixel density294 ppi
width of band20 mm
water resistanceWaterproof
Always-On DisplayYes
has a touch screenNo
is designed for kidsNo
waterproof depth rating50 m
Watch band is replaceableYes
Has sapphire glass displayNo
maximum operating temperature60 °C
has branded damage-resistant glassNo
lowest potential operating temperature-20 °C
Battery6
battery life14 days
has wireless chargingNo
has a removable batteryNo
battery life with GPS on20 hours
Has a solar power batteryNo
has a rechargeable batteryYes
Sensors10
has GPSYes
has a compassNo
Has a barometerNo
has a gyroscopeNo
Has a cadence sensorNo
has an accelerometerYes
Monitors perspirationNo
Has a heart rate monitorYes
Has a temperature sensorNo
Monitors blood oxygenation levelsNo
Features24
release date2021-06-02
Has a stopwatchYes
Has smart alarmNo
warranty period1 years
Has call controlYes
Has silent alarmYes
has HRV trackingNo
internal storage31.25MB
measures VO2 maxYes
Has notificationsYes
Has ECG technologyNo
Locates your phoneYes
has a front cameraNo
has fall detectionYes
has voice commandsNo
Acquires GPS fasterNo
Has vibrating alertsYes
number of microphones0
shows readiness levelNo
Can be used to answer callsNo
measures resting heart rateYes
has irregular heart rate warningsYes
has fast/slow heart rate notificationsYes
Has a built-in camera remote control functionNo
Connectivity8
has NFCNo
supports ANT+Yes
supports Wi-FiNo
supports GalileoYes
Bluetooth version5
has a cellular moduleNo
Is compatible with iOSYes
Is compatible with AndroidYes
Miscellaneous10
has aptXNo
Has auto pauseYes
Available on PCYes
Is compatible with WindowsNo
Is compatible with Mac OS XNo
has an external memory slotNo
Compatible with smart scalesYes
has a battery level indicatorYes
has a socket for a 3.5 mm audio jackNo
Compatible with external heart rate monitorsYes
App & Software22
Ad-freeYes
Free appYes
Tracks BMIYes
Has coachingYes
Includes mapsYes
Supports routesYes
Has achievementsYes
Has goal settingYes
Has live trackingYes
Has exercise diaryYes
Predicts ovulationYes
Can be personalisedYes
Has weight trackingYes
Predicts start dateYes
Tracks water intakeYes
Has inactivity alertsYes
Has period notificationsYes
Has temperature trackingNo
Doesn’t require accountNo
Provides activity reportsYes
Displays fertile window notificationsYes
Counts how many calories you've burnedYes
Activity tracking14
Measures paceYes
Tracks distanceYes
Tracks elevationNo
Designed for golfNo
Tracks your sleepYes
Tracks steps takenYes
Designed for divingNo
Has a route trackerYes
Has exercise taggingYes
Has multi-sport modeNo
Tracks calorie intakeYes
Provides sleep reportsYes
Detects activities automaticallyYes
Has a stroke counter for swimmingYes

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Forerunner 55 — Frequently Asked Questions

What size is the Garmin Forerunner 55?

The Garmin Forerunner 55 has a 42mm case and is 11.6mm thick.

Will the Garmin Forerunner 55 fit my wrist?

The Garmin Forerunner 55 looks balanced on flat wrist widths of roughly 44–60mm (about 11.7–16.0cm circumference). Use the interactive fit tool above to check against your own wrist.

How much does the Garmin Forerunner 55 weigh?

The Garmin Forerunner 55 weighs 37g (case only; straps add weight).

What is the best way to compare the Garmin Forerunner 55 with other watches?

Use our side-by-side comparison tool to see the Garmin Forerunner 55 next to any other watch — case size, thickness, lug-to-lug and full specs, scaled to real proportions.

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