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Approach J1 vs Forerunner 70

Garmin Approach J1 vs Garmin Forerunner 70

What Approach J1 does better (3) and where Forerunner 70 wins (3) — every spec side by side.

Garmin · 2026Approach J1

4.1Score

3 advantages≈ $300

Garmin · 2026Forerunner 70

4.6Score

3 advantages≈ $250

Higher score

6.3Display5.3

2.7Battery life3.9

3.9Build & durability3.4

Dimensions

Size comparison

Approach J1Forerunner 70

	Approach J1	Forerunner 70	Difference
Height	43 mm	42.6 mm	+0.4 mm
Width	43 mm	42.6 mm	+0.4 mm
Thickness	11.4 mm	11.9 mm	−0.5 mm
Weight	29 g	40 g	−11 g

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

Why is Approach J1 better than Forerunner 70?

Storage4 GB vs 0 GB8×
Weight29 g vs 40 g+38%
Thickness11.4 mm vs 11.9 mm+4%

Why is Forerunner 70 better than Approach J1?

Battery life (smartwatch mode)10 days vs 13 days+30%
GPS battery life15 h vs 23 h+53%
Sport profiles5 vs 7615.2×

Specifications

Side by side

Only differences	Garmin Approach J1≈ $3004.1	Garmin Forerunner 70≈ $2504.6
Design & durability
Case size	43 mm	43 mm
Weight	29 g	40 g
Thickness	11.4 mm	11.9 mm
Height	43 mm	42.6 mm
Width	43 mm	42.6 mm
Case material	Aluminium	Plastic / polymer
Sapphire crystal	No	No
Lens / cover glass	chemically strengthened glass	chemically strengthened glass
Strap material	elastic fabric hook and loop	silicone
Water resistance	5 ATM	5 ATM
Water rating (maker)	5 ATM	5 ATM
Display
Screen size	—	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
Battery
Battery life (smartwatch mode)	10 days	13 days
Battery life with always-on display	—	5 days
Battery saver mode	—	28 days
GPS battery life	15 h	23 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
Blood oxygen (SpO2)	—	Yes
HRV tracking	—	Yes
Sleep tracking	—	Yes
Sensors	GPS, GLONASS, Galileo, Compass, Gyroscope, Accelerometer, Ambient light sensor	GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Accelerometer, Ambient light sensor
Sports & navigation
Built-in GPS	Yes	Yes
Satellite systems	GLONASS, GALILEO	GLONASS, GALILEO
Compass	Yes	—
Sport profiles	5	76
Connectivity
ANT+ sensors	—	Yes
Smart features
Storage	4 GB	0 GB
Third-party apps	—	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android