Apple Watch UltravsXiaomi Watch

6d vs 1.75d

battery life

Xiaomi Watch lasts longer

$514

price gap

Xiaomi Watch cheaper

more health sensors

Apple Watch Ultra

Buy/Wait:neutral

Reaching maturity, next model expected soon

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Xiaomi Watch

Buy/Wait:good

Early in release cycle

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	Apple Watch Ultra	Xiaomi Watch
Pricing
Starting price	$799	$285★
Subscription	✓ None	✓ None
Hardware
Weight	62g	56g★
Water resistance	100m★	5ATM
Battery	1.75 days	6 days★
Always-on display	✅	✅
GPS	✅	✅
Cellular	✅	✅
Platform	iOS only	Android only
Tier	Sports GPS	Smartwatch
Buy timing
Released	Sep 19, 2025	Feb 28, 2026
Cycle advice	neutral	good★
Deals advice	neutral	neutral
Next model	Apple Watch Ultra 4 (Expected fall 2026)	—

Health Sensors

Apple Watch Ultra only

7 exclusive sensors

Irregular RhythmBackground optical check for irregular heart rhythms

Fall DetectionAuto-calls emergency services after a hard fall

Crash DetectionDetects vehicle crashes and alerts emergency contacts

Sleep ApneaFDA-cleared detection of signs of moderate to severe sleep apnea

Blood PressureDetects hypertension patterns — trend tracking, not clinical mmHg

Depth GaugeMeasures water depth — certified for recreational diving to 40m

Water TempMeasures water temperature during swimming and diving

Both

5 shared

Heart RateContinuous or on-demand pulse tracking

ECGDetects irregular heart rhythms (AFib)

SpO2Blood oxygen saturation, tracked during sleep

Skin TempOvernight changes linked to illness or cycle tracking

HRVHeart rate variability — stress & recovery scores

Xiaomi Watch only

No exclusive sensors

Why buy each?

Apple Watch Ultra

42-hour battery + satellite SOS

The Ultra 3 nearly doubles the Series 11 battery life, and satellite emergency SOS works even without cellular or WiFi coverage.

Dual-frequency L1+L5 GPS

More precise GPS tracking in urban canyons and dense forests — critical for trail running, mountaineering, and triathlon.

3000-nit titanium-cased powerhouse

The 49mm titanium case and 3000-nit display make this watch usable in full direct sunlight and water depths up to 100m (EN13319 certified for diving).

Xiaomi Watch

6-day battery on Wear OS

Dual-chip design keeps the main Snapdragon W5 dormant during light tasks, dramatically extending battery life beyond any rival Wear OS watch.

Wear OS 6 with ECG and eSIM

First Wear OS 6 device on the market — with ECG monitoring, EMG gesture control, and eSIM for standalone calling.

1.54" AMOLED at a competitive price

Larger and brighter display than Galaxy Watch 8 or Pixel Watch 4, with Hasselblad-tuned health sensors, starting at around $285.

Quick Winner

The right pick depends on what you optimize for.

Bottom Line

Technical gaps

Watch Ultra-only sensors: Irregular Rhythm, Fall Detection, Crash Detection, Sleep Apnea, Blood Pressure, Depth Gauge, Water Temp.
Weight. Watch is 6g lighter — relevant for all-day comfort and sleep.
Water resistance. Watch Ultra rates 100m vs 5ATM on Watch.

Commercial gaps

Hardware cost. Watch is $514 cheaper upfront ($285 vs $799).

Pick the Apple Watch Ultra if…

Serious athletes, trail runners, triathletes, and outdoor adventurers who need the most durable, most accurate GPS watch Apple makes. Also for iPhone users who simply want the best Apple Watch regardless of sport, and value the extra battery life over the Series 11.

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Pick the Xiaomi Watch if…

Android users who want a full-featured Wear OS smartwatch — ECG, eSIM, a large bright screen — at a price well below Samsung and Google competitors. A natural pairing with Xiaomi phones but fully compatible with any Android device.

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