idk.dev
Compare
Forerunner 745 vs Forerunner 945

Garmin Forerunner 745 vs Garmin Forerunner 945

What Forerunner 745 does better (2) and where Forerunner 945 wins (4) — every spec side by side.

Garmin · 2020Forerunner 745

3.8Score

2 advantages≈ $500

Garmin · 2019Forerunner 945

4.4Score

4 advantages≈ $730

Higher score

2.9Display2.9

2.2Battery life5.3

4.9Health tracking4.9

2.8Sports & outdoor3.9

6.5Smart features6.5

2.8Build & durability2.6

Dimensions

Size comparison

Forerunner 745Forerunner 945

	Forerunner 745	Forerunner 945	Difference
Height	43.8 mm	47 mm	−3.2 mm
Width	43.8 mm	47 mm	−3.2 mm
Thickness	13.3 mm	13.7 mm	−0.4 mm
Weight	47 g	50 g	−3 g

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

Why is Forerunner 745 better than Forerunner 945?

Weight47 g vs 50 g+6%
Thickness13.3 mm vs 13.7 mm+3%

Why is Forerunner 945 better than Forerunner 745?

Battery life (smartwatch mode)7 days vs 14 days2×
GPS battery life16 h vs 36 h2.2×
Storage4 GB vs 16 GB4×
Sport profiles30 vs 31+3%

Specifications

Side by side

Only differences	Garmin Forerunner 745≈ $5003.8	Garmin Forerunner 945≈ $7304.4
Design & durability
Case size	44 mm	47 mm
Weight	47 g	50 g
Thickness	13.3 mm	13.7 mm
Height	43.8 mm	47 mm
Width	43.8 mm	47 mm
Case material	Plastic / polymer	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	5 ATM
Water rating (maker)	5 ATM	5 ATM
Display
Screen size	1.2″	1.2″
Display technology	Memory-in-pixel (transflective)	Memory-in-pixel (transflective)
Panel	Sunlight-visible, transflective memory-in-pixel	Sunlight-visible, transflective memory-in-pixel
AMOLED / OLED display	No	No
Always-on display	Yes	Yes
Resolution (width)	240 px	240 px
Resolution (height)	240 px	240 px
Pixel density	200 ppi	200 ppi
Battery
Battery life (smartwatch mode)	7 days	14 days
GPS battery life	16 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	30	31
Connectivity
NFC payments	Yes	Yes
Wi-Fi	Wi-Fi 4	Wi-Fi 4
ANT+ sensors	Yes	Yes
Smart features
Music on the watch	Yes	Yes
Storage	4 GB	16 GB
Third-party apps	Yes	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android