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D2 Air X10 vs Forerunner 955

Garmin D2 Air X10 vs Garmin Forerunner 955

What D2 Air X10 does better (4) and where Forerunner 955 wins (3) — every spec side by side.

Garmin · 2022D2 Air X10

4.3Score

4 advantages≈ $550

Garmin · 2022Forerunner 955

4.8Score

3 advantages≈ $500

Higher score

5.0Display3.8

2.3Battery life6.4

4.9Health tracking4.9

2.7Sports & outdoor6.0

4.0Smart features6.5

2.5Build & durability2.5

Dimensions

Size comparison

D2 Air X10Forerunner 955

	D2 Air X10	Forerunner 955	Difference
Height	43.6 mm	46.5 mm	−2.9 mm
Width	43.6 mm	46.5 mm	−2.9 mm
Thickness	12.6 mm	14.4 mm	−1.8 mm
Weight	51 g	52 g	−1 g

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

Why is D2 Air X10 better than Forerunner 955?

AMOLED / OLED displayYes · Forerunner 955: No
Resolution (width)416 px vs 260 px+60%
Pixel density320 ppi vs 200 ppi+60%
Thickness12.6 mm vs 14.4 mm+14%

Why is Forerunner 955 better than D2 Air X10?

Battery life (smartwatch mode)7 days vs 15 days2.1×
GPS battery life24 h vs 42 h+75%
Sport profiles24 vs 803.3×

Specifications

Side by side

Only differences	Garmin D2 Air X10≈ $5504.3	Garmin Forerunner 955≈ $5004.8
Design & durability
Case size	44 mm	46 mm
Weight	51 g	52 g
Thickness	12.6 mm	14.4 mm
Height	43.6 mm	46.5 mm
Width	43.6 mm	46.5 mm
Case material	Stainless steel	Plastic / polymer
Sapphire crystal	No	No
Lens / cover glass	Corning® Gorilla® Glass 3	Corning® Gorilla® Glass 3 DX
Strap material	silicone	silicone
Water resistance	5 ATM	5 ATM
Water rating (maker)	Swim, 5 ATM	5 ATM
Display
Screen size	1.3″	1.3″
Display technology	AMOLED	Memory-in-pixel (transflective)
Panel	AMOLED	Sunlight-visible, transflective memory-in-pixel
AMOLED / OLED display	Yes	No
Always-on display	Yes	Yes
Touchscreen	Yes	Yes
Resolution (width)	416 px	260 px
Resolution (height)	416 px	260 px
Pixel density	320 ppi	200 ppi
Battery
Battery life (smartwatch mode)	7 days	15 days
Battery saver mode	10 days	—
GPS battery life	24 h	42 h
GPS battery life (dual-band)	—	20 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
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
Sports & navigation
Built-in GPS	Yes	Yes
Dual-band GPS	—	Yes
Satellite systems	GLONASS, GALILEO	GLONASS, GALILEO, BDS, QZSS
Offline maps	—	Yes
Barometric altimeter	Yes	Yes
Compass	Yes	Yes
Multisport / triathlon mode	—	Yes
Sport profiles	24	80
Connectivity
NFC payments	Yes	Yes
Wi-Fi	Wi-Fi 4	Wi-Fi 4
ANT+ sensors	Yes	Yes
Smart features
Calls from the wrist	Yes	—
Voice assistant	Yes	—
Music on the watch	Yes	Yes
Storage	—	32 GB
Third-party apps	Yes	Yes
Platform
Operating system	Garmin OS	Garmin OS
Platform	Proprietary	Proprietary
Works with	iOS, Android	iOS, Android