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Forerunner 745 vs Grit X Pro

Garmin Forerunner 745 vs Polar Grit X Pro

What Forerunner 745 does better (2) and where Grit X Pro wins (3) — every spec side by side.

Garmin · 2020Forerunner 745

3.8Score

2 advantages≈ $500

Polar · 2021Grit X Pro

4.0Score

3 advantages≈ $570

Higher score

2.9Display3.4

2.2Battery life3.5

4.9Health tracking2.1

2.8Sports & outdoor2.2

2.8Build & durability6.7

Dimensions

Size comparison

Forerunner 745Grit X Pro

	Forerunner 745	Grit X Pro	Difference
Height	43.8 mm	47 mm	−3.2 mm
Width	43.8 mm	47 mm	−3.2 mm
Thickness	13.3 mm	13 mm	+0.3 mm
Weight	47 g	79 g	−32 g

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

Why is Forerunner 745 better than Grit X Pro?

Battery life (smartwatch mode)7 days vs 6 days+17%
Weight47 g vs 79 g+68%

Why is Grit X Pro better than Forerunner 745?

GPS battery life16 h vs 35 h2.2×
Water resistance5 ATM vs 10 ATM2×
Thickness13.3 mm vs 13 mm+2%

Specifications

Side by side

Only differences	Garmin Forerunner 745≈ $5003.8	Polar Grit X Pro≈ $5704.0
Design & durability
Case size	44 mm	47 mm
Weight	47 g	79 g
Thickness	13.3 mm	13 mm
Height	43.8 mm	47 mm
Width	43.8 mm	47 mm
Case material	Plastic / polymer	Stainless steel
Sapphire crystal	No	—
Lens / cover glass	Corning® Gorilla® Glass DX	—
Strap material	silicone	—
Water resistance	5 ATM	10 ATM
Water rating (maker)	5 ATM	WR100
Military-grade (MIL-STD-810)	—	Yes
Colours	—	Arctic Gold, Black
Display
Screen size	1.2″	1.2″
Display technology	Memory-in-pixel (transflective)	Memory-in-pixel (transflective)
Panel	Sunlight-visible, transflective memory-in-pixel	MIP
AMOLED / OLED display	No	No
Always-on display	Yes	Yes
Touchscreen	—	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	6 days
GPS battery life	16 h	35 h
Battery capacity	—	346 mAh
Battery type	—	Li-Pol
Wireless charging	No	—
Charging	Garmin proprietary plug charger	—
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	—
Skin temperature	—	No
Temperature sensor	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	Barometer, Magnetometer compass, Accelerometer, Gyroscope
Sports & navigation
Built-in GPS	Yes	Yes
Satellite systems	GLONASS, GALILEO	—
Offline maps	—	No
Barometric altimeter	Yes	Yes
Compass	Yes	Yes
Multisport / triathlon mode	Yes	—
Sport profiles	30	—
LED flashlight	—	No
Connectivity
NFC payments	Yes	—
Wi-Fi	Wi-Fi 4	—
ANT+ sensors	Yes	—
Smart features
Music on the watch	Yes	—
Storage	4 GB	—
Third-party apps	Yes	—
Platform
Operating system	Garmin OS	Polar OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	—