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: Budget-conscious users who want more features than a basic step counter — SpO2, stress, sleep analysis, and workout tracking — without paying for a full smartwatch. Works with both iPhone and Android.
Full details →| Polar Grit X | Amazfit Band 7 | |
|---|---|---|
| Tier | Sports GPS | Fitness Tracker |
| Platform | iOS & Android | iOS & Android |
| Battery | 40 days | 18 days |
| Always-on display | ❌ | ❌ |
| GPS | ✅ | ❌ |
| Cellular | ❌ | ❌ |
| Health sensors | hr, spo2, hrv, running power | hr, spo2, stress, sleep |
| Released | Mar 14, 2023 | Sep 22, 2022 |
| Cycle length | 873 days | 699 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.
18 days of typical use with health monitoring — nearly 3 weeks without charging, far beyond any smartwatch competitor.
Ask Alexa for weather, timers, reminders, and smart home controls directly from your wrist — unusual for a sub-$50 fitness band.
Amazfit's Personal Activity Intelligence score aggregates your daily activity into a single 0–100 health index, guiding you toward optimal activity levels.