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Approach S70 42mm vs D2 Air X15

Garmin Approach S70 42mm vs Garmin D2 Air X15

What Approach S70 42mm does better (1) and where D2 Air X15 wins (5) — every spec side by side.

Garmin · 2023Approach S70 42mm

4.4Score

1 advantage≈ $650

Garmin · 2025D2 Air X15

4.9Score

5 advantages≈ $650

Higher score

5.3Display6.5

2.7Battery life3.2

4.9Health tracking8.3

3.2Sports & outdoor6.1

6.5Smart features3.2

2.9Build & durability3.7

Dimensions

Size comparison

Approach S70 42mmD2 Air X15

	Approach S70 42mm	D2 Air X15	Difference
Height	42 mm	45 mm	−3 mm
Width	42 mm	45 mm	−3 mm
Thickness	12.6 mm	12.5 mm	+0.1 mm
Weight	44 g	38 g	+6 g

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

Why is Approach S70 42mm better than D2 Air X15?

Storage16 GB vs 8 GB2×

Why is D2 Air X15 better than Approach S70 42mm?

GPS battery life15 h vs 20 h+33%
Sport profiles40 vs 932.3×
Screen size1.2″ vs 1.4″+17%
Weight44 g vs 38 g+16%
Resolution (width)390 px vs 454 px+16%

Specifications

Side by side

Only differences	Garmin Approach S70 42mm≈ $6504.4	Garmin D2 Air X15≈ $6504.9
Design & durability
Case size	42 mm	45 mm
Weight	44 g	38 g
Thickness	12.6 mm	12.5 mm
Height	42 mm	45 mm
Width	42 mm	45 mm
Case material	Ceramic	Stainless steel
Sapphire crystal	No	No
Lens / cover glass	Corning ® Gorilla ® Glass 3	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″	1.4″
Display technology	AMOLED	AMOLED
Panel	AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Always-on display	Yes	Yes
Touchscreen	Yes	Yes
Resolution (width)	390 px	454 px
Resolution (height)	390 px	454 px
Pixel density	325 ppi	324 ppi
Battery
Battery life (smartwatch mode)	10 days	10 days
Battery life with always-on display	—	4 days
Battery saver mode	—	25 days
GPS battery life	15 h	20 h
GPS battery life (dual-band)	—	17 h
Battery type	—	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
ECG	—	Yes
Skin temperature	—	Yes
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, Ambient light sensor	GPS, GLONASS, Galileo, QZSS, BeiDou, 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	40	93
LED flashlight	—	Yes
Connectivity
NFC payments	Yes	Yes
Wi-Fi	Wi-Fi 4	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	Yes
Storage	16 GB	8 GB
Third-party apps	Yes	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android