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.
Full details →Overdue for a refresh — no successor announced yet. Prices should be at their lowest
Best for: Anyone who wants serious health and fitness tracking without the bulk or cost of a full smartwatch. Works with both Android and iPhone, making it the most accessible Fitbit tracker in the lineup.
Full details →| Polar Grit X | Fitbit Charge | |
|---|---|---|
| Tier | Sports GPS | Fitness Tracker |
| Platform | iOS & Android | iOS & Android |
| Battery | 40 days | 7 days |
| Always-on display | ❌ | ❌ |
| GPS | ✅ | ✅ |
| Cellular | ❌ | ❌ |
| Health sensors | hr, spo2, hrv, running power | ecg, spo2, eda stress, hr |
| Released | Mar 14, 2023 | Sep 28, 2023 |
| Cycle length | 873 days | 731 days |
| 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.
Full ECG, electrodermal activity stress sensing, SpO2, and continuous heart rate in a tracker thinner than most smartwatches.
Google Maps navigation, Google Wallet NFC payments, and YouTube Music controls — more useful on-device apps than any previous Charge.
7 days of typical use, dropping to around 30 minutes per GPS workout session before needing a charge.