Overdue for a refresh — no successor announced yet. Prices should be at their lowest
Full details →| Polar Grit X | Fitbit Sense | |
|---|---|---|
| Pricing | ||
| Starting price | $749 | $199★ |
| Subscription | ✓ None | ℹ️ Optional — $79/yr |
| Hardware | ||
| Weight | 57g | 26g★ |
| Water resistance | 100m★ | 50m |
| Battery | 40 days★ | 6 days |
| Always-on display | ❌ | ❌ |
| GPS | ✅ | ✅ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Sports GPS | Smartwatch |
| Buy timing | ||
| Released | Apr 11, 2024 | Sep 28, 2022 |
| Cycle advice | bad | bad |
| Deals advice | good | good |
| Next model | — | — |
Five times the battery of the Vantage V3 — enough for week-long mountain stages or ultramarathons without charging access.
Automatically segments your run by uphill and downhill sections, calculating pace and power for each — essential for mountain race training.
Running power without a chest strap or foot pod — Polar's key differentiator versus Garmin at this price tier.
The EDA (electrodermal activity) sensor tracks physiological stress throughout the day — a feature absent from most competitors at this price.
Comes with Fitbit Premium for advanced sleep analysis, HRV trends, stress management scores, and personalised health insights.
Unlike Apple Watch or Galaxy Watch, Sense 2 pairs with any smartphone and runs 6 days before charging.
The right pick depends on what you optimize for.
$436 vs $749 over 3 years · no required subscription.
40 days vs 6 days battery.
6 sensors.
26g · no required subscription.
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.
Full details →Health-conscious users on any platform who want continuous stress monitoring (EDA sensor), ECG, and Fitbit's deep wellness coaching — without paying Galaxy Watch or Apple Watch prices. Particularly strong for iPhone users who want serious health tracking at under $250.
Full details →