Wear Radar

Xiaomi WatchvsPolar Vantage V

Xiaomi Watch
Buy/Wait:good

Current model just released

Best for: 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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Polar Vantage V
Buy/Wait:bad

Late in cycle — a new model is likely coming

Best for: Serious endurance athletes — particularly runners and triathletes — who want Polar's unmatched training load science and recovery guidance, combined with ECG health monitoring and running power in a premium package.

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Xiaomi WatchPolar Vantage V
TierSmartwatchSports GPS
PlatformAndroid onlyiOS & Android
Battery6 days8 days
Always-on display
GPS
Cellular
Health sensorsecg, spo2, hrv, skin temp, hrecg, hr, spo2, hrv, running power, skin temp
ReleasedFeb 28, 2026Oct 4, 2023
Cycle length365 days1063 days
Cycle advicegoodbad
Deals adviceneutralgood
Next modelPolar Vantage V4 (2026)

Why buy each?

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.

Polar Vantage V

ECG on a sports GPS watch

Polar Vantage V3 is one of the few sports GPS watches with on-demand ECG — usually only found on lifestyle smartwatches.

Wrist-based running power

Running power measurement without a foot pod or chest strap — a significant training metric for pacing effort on hills and varied terrain.

Polar Training Load Pro

The most detailed training load analysis in any sports watch: muscle groups targeted per session, recovery status per muscle, and long-term load trends.