Wear Radar

Garmin vivosmart 5vsPolar Grit X

Garmin vivosmart 5
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Garmin users and health-focused individuals who want Body Battery, HRV, and advanced sleep analytics in a slim, discreet wristband rather than a sports watch. Compatible with both iPhone and Android via Garmin Connect.

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Polar Grit X
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Trail runners, hikers, and outdoor athletes who want Polar's analytics with significantly longer battery life than the Vantage V3. The titanium case and sapphire glass make it suitable for technical terrain where watch durability matters.

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Garmin vivosmart 5Polar Grit X
TierFitness TrackerSports GPS
PlatformiOS & AndroidiOS & Android
Battery7 days40 days
Always-on display
GPS
Cellular
Health sensorshr, spo2, hrv, stress, body battery, pulse oxhr, spo2, hrv, running power
ReleasedApr 26, 2022Mar 14, 2023
Cycle length700 days873 days
Cycle advicebadbad
Deals advicegoodgood
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Why buy each?

Garmin vivosmart 5

Garmin Body Battery in a band

Body Battery energy monitoring — the feature Garmin is known for — in a wristband that's thinner than most fitness trackers.

HRV status and stress tracking

Continuous heart rate variability monitoring and all-day stress tracking give a more complete picture of recovery and readiness than step counts alone.

Works with Garmin Connect ecosystem

All data syncs to Garmin Connect, compatible with thousands of third-party apps, coaches, and integrations across the Garmin platform.

Polar Grit X

40-day battery for trail and ultra runners

Five times the battery of the Vantage V3 — enough for week-long mountain stages or ultramarathons without charging access.

Hill splitter auto-detection

Automatically segments your run by uphill and downhill sections, calculating pace and power for each — essential for mountain race training.

Wrist running power at mid-range price

Running power without a chest strap or foot pod — Polar's key differentiator versus Garmin at this price tier.