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Descent Mk3i 51mm vs Watch Ultimate 2

Garmin Descent Mk3i 51mm vs Huawei Watch Ultimate 2

What Descent Mk3i 51mm does better (3) and where Watch Ultimate 2 wins (5) — every spec side by side.

Garmin · 2023Descent Mk3i 51mm

9.6Score

3 advantages≈ $1,600

Higher score

Huawei · 2025Watch Ultimate 2

9.5Score

5 advantages≈ $810

7.4Display8.5

9.4Health tracking8.5

7.2Sports & outdoor4.7

6.6Smart features9.4

9.6Build & durability9.4

Dimensions

Size comparison

Descent Mk3i 51mmWatch Ultimate 2

	Descent Mk3i 51mm	Watch Ultimate 2	Difference
Height	51 mm	48.5 mm	+2.5 mm
Width	51 mm	48.5 mm	+2.5 mm
Thickness	16.4 mm	12.9 mm	+3.5 mm
Weight	78 g	80 g	−3 g

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

Why is Descent Mk3i 51mm better than Watch Ultimate 2?

Battery life (smartwatch mode)25 days vs 14 days+79%
Weight77.8 g vs 80.5 g+3%
Pixel density324 ppi vs 310 ppi+5%

Why is Watch Ultimate 2 better than Descent Mk3i 51mm?

Wireless chargingNo · Descent Mk3i 51mm: Yes
Screen size1.4″ vs 1.5″+7%
Wi-FiWi-Fi 4 vs Wi-Fi 6+50%
Thickness16.4 mm vs 12.9 mm+27%
Resolution (width)454 px vs 466 px+3%

Specifications

Side by side

Only differences	Garmin Descent Mk3i 51mm≈ $1,6009.6	Huawei Watch Ultimate 2≈ $8109.5
Design & durability
Case size	51 mm	48 mm
Weight	77.8 g	80.5 g
Thickness	16.4 mm	12.9 mm
Height	51 mm	48.5 mm
Width	51 mm	48.5 mm
Case material	Titanium	—
Sapphire crystal	Yes	Yes
Lens / cover glass	sapphire crystal	Saphirglas Saphirglas
Strap material	silicone or DLC coated titanium	—
Water resistance	20 ATM	20 ATM
Ingress protection	—	IP68
Water resistance (IPx)	—	IPx8
Water rating (maker)	Dive (200 meters)	200 m / 20 bar / 20 ATM
Rated dive depth	200 m	—
Colours	—	Black, Blue
Display
Screen size	1.4″	1.5″
Display technology	AMOLED	AMOLED
Panel	AMOLED	LTPO2 AMOLED
AMOLED / OLED display	Yes	Yes
Touchscreen	Yes	Yes
Resolution (width)	454 px	466 px
Resolution (height)	454 px	466 px
Pixel density	324 ppi	310 ppi
Peak brightness	—	3,500 nits
LTPO display	—	Yes
Refresh rate	—	60 Hz
Battery
Battery life (smartwatch mode)	25 days	14 days
Battery life with always-on display	10 days	—
Battery saver mode	31 days	—
GPS battery life	76 h	—
GPS battery life (dual-band)	48 h	—
Battery capacity	—	867 mAh
Battery type	—	Li-Ion
Wireless charging	No	Yes
Charging	Garmin proprietary clip charger	Ladestation, kabellos
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	—	Yes
Skin temperature	Yes	Yes
Temperature sensor	Yes	Yes
HRV tracking	Yes	—
Sleep tracking	Yes	Yes
Sensors	GPS, GLONASS, Galileo, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor, Depth sensor	Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature), X-TAP
Sports & navigation
Built-in GPS	Yes	Yes
Dual-band GPS	Yes	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	98	—
Dive mode	Yes	Yes
LED flashlight	Yes	—
Connectivity
NFC payments	Yes	Yes
LTE (cellular)	—	Yes
eSIM	—	Yes
Satellite messaging	—	Yes
Wi-Fi	Wi-Fi 4	Wi-Fi 6
Bluetooth	—	5.2
ANT+ sensors	Yes	—
Smart features
Calls from the wrist	—	Yes
Speaker	—	Yes
Music on the watch	Yes	—
Storage	32 GB	—
Third-party apps	Yes	—
Platform
Operating system	Garmin OS	HarmonyOS 5.1
Platform	Proprietary	HarmonyOS
Works with	iOS, Android	Android, iOS