idk.dev
Compare
Fenix 6 vs Forerunner 945

Garmin Fenix 6 vs Garmin Forerunner 945

What Fenix 6 does better (3) and where Forerunner 945 wins (3) — every spec side by side.

Garmin · 2019Fenix 6

5.7Score

3 advantages≈ $550

Higher score

Garmin · 2019Forerunner 945

4.4Score

3 advantages≈ $730

5.5Battery life5.3

4.9Health tracking4.9

3.3Sports & outdoor3.9

2.2Smart features6.5

Dimensions

Size comparison

Fenix 6Forerunner 945

	Fenix 6	Forerunner 945	Difference
Height	47 mm	47 mm	=
Width	47 mm	47 mm	=
Thickness	14.7 mm	13.7 mm	+1 mm
Weight	80 g	50 g	+30 g

Drawn to the same scale from the official dimensions (front and side).

Why is Fenix 6 better than Forerunner 945?

Screen size1.3″ vs 1.2″+8%
Sport profiles39 vs 31+26%
Resolution (width)260 px vs 240 px+8%

Why is Forerunner 945 better than Fenix 6?

Weight80 g vs 50 g+60%
Storage0.06 GB vs 16 GB266.7×
Thickness14.7 mm vs 13.7 mm+7%

Specifications

Side by side

Only differences	Garmin Fenix 6≈ $5505.7	Garmin Forerunner 945≈ $7304.4
Design & durability
Case size	47 mm	47 mm
Weight	80 g	50 g
Thickness	14.7 mm	13.7 mm
Height	47 mm	47 mm
Width	47 mm	47 mm
Case material	Stainless steel	Plastic / polymer
Sapphire crystal	No	No
Lens / cover glass	Corning® Gorilla® Glass DX	Corning® Gorilla® Glass 3 DX
Strap material	silicone	silicone
Water resistance	—	5 ATM
Water rating (maker)	—	5 ATM
Display
Screen size	1.3″	1.2″
Display technology	—	Memory-in-pixel (transflective)
Panel	—	Sunlight-visible, transflective memory-in-pixel
AMOLED / OLED display	—	No
Always-on display	—	Yes
Resolution (width)	260 px	240 px
Resolution (height)	260 px	240 px
Pixel density	200 ppi	200 ppi
Battery
Battery life (smartwatch mode)	14 days	14 days
Battery saver mode	48 days	—
GPS battery life	36 h	36 h
Wireless charging	No	No
Charging	Garmin proprietary plug charger	Garmin proprietary plug charger
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
Temperature sensor	Yes	Yes
HRV tracking	Yes	Yes
Sleep tracking	Yes	Yes
Sensors	GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer	GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer
Sports & navigation
Built-in GPS	Yes	Yes
Satellite systems	GLONASS, GALILEO	GLONASS, GALILEO
Offline maps	—	Yes
Barometric altimeter	Yes	Yes
Compass	Yes	Yes
Multisport / triathlon mode	Yes	Yes
Sport profiles	39	31
Connectivity
NFC payments	Yes	Yes
Wi-Fi	—	Wi-Fi 4
ANT+ sensors	Yes	Yes
Smart features
Music on the watch	Yes	Yes
Storage	0.06 GB	16 GB
Third-party apps	Yes	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android