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Forerunner 170 vs Forerunner 570 42mm

Garmin Forerunner 170 vs Garmin Forerunner 570 42mm

What Forerunner 170 does better (3) and where Forerunner 570 42mm wins (2) — every spec side by side.

Garmin · 2026Forerunner 170

4.3Score

3 advantages≈ $300

Garmin · 2025Forerunner 570 42mm

4.5Score

2 advantages≈ $550

Higher score

5.3Display5.3

2.9Battery life2.6

4.9Health tracking9.4

4.7Sports & outdoor5.5

3.1Build & durability3.0

Dimensions

Size comparison

Forerunner 170Forerunner 570 42mm

	Forerunner 170	Forerunner 570 42mm	Difference
Height	42.6 mm	42.4 mm	+0.2 mm
Width	42.6 mm	42.4 mm	+0.2 mm
Thickness	11.9 mm	12.9 mm	−1 mm
Weight	41 g	42 g	−1 g

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

Why is Forerunner 170 better than Forerunner 570 42mm?

GPS battery life20 h vs 18 h+11%
Weight41 g vs 42 g+2%
Thickness11.9 mm vs 12.9 mm+8%

Why is Forerunner 570 42mm better than Forerunner 170?

Storage4 GB vs 8 GB2×
Sport profiles78 vs 83+6%

Specifications

Side by side

Only differences	Garmin Forerunner 170≈ $3004.3	Garmin Forerunner 570 42mm≈ $5504.5
Design & durability
Case size	43 mm	42 mm
Weight	41 g	42 g
Thickness	11.9 mm	12.9 mm
Height	42.6 mm	42.4 mm
Width	42.6 mm	42.4 mm
Case material	Plastic / polymer	Aluminium
Sapphire crystal	No	No
Lens / cover glass	chemically strengthened glass	Corning® Gorilla® Glass 3
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	AMOLED	AMOLED
Panel	AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Always-on display	Yes	Yes
Touchscreen	Yes	Yes
Resolution (width)	390 px	390 px
Resolution (height)	390 px	390 px
Pixel density	325 ppi	325 ppi
Battery
Battery life (smartwatch mode)	10 days	10 days
Battery life with always-on display	4 days	—
Battery saver mode	19 days	—
GPS battery life	20 h	18 h
GPS battery life (dual-band)	—	13 h
Battery type	Lithium ion	Lithium ion
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
Skin temperature	—	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, Ambient light sensor	GPS, GLONASS, Galileo, QZSS, BeiDou, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor
Sports & navigation
Built-in GPS	Yes	Yes
Dual-band GPS	—	Yes
Satellite systems	GLONASS, GALILEO	GLONASS, GALILEO, BDS, QZSS
Barometric altimeter	Yes	Yes
Compass	Yes	Yes
Multisport / triathlon mode	—	Yes
Sport profiles	78	83
Connectivity
NFC payments	Yes	Yes
Wi-Fi	—	Wi-Fi 4
ANT+ sensors	Yes	Yes
Smart features
Calls from the wrist	—	Yes
Speaker	—	Yes
Microphone	—	Yes
Voice assistant	—	Yes
Music on the watch	—	Yes
Storage	4 GB	8 GB
Third-party apps	Yes	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android