Late in cycle — a new model is likely coming
Best for: Anyone who wants basic health tracking — steps, sleep, heart rate, SpO2 — without spending more than $40 or carrying a bulky watch. Works with both iPhone and Android. A popular choice for kids, older adults, and budget-conscious fitness beginners who want the world's top-selling fitness band.
Full details →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.
Full details →| Xiaomi Smart Band 10 | Polar Vantage V | |
|---|---|---|
| Tier | Fitness Tracker | Sports GPS |
| Platform | iOS & Android | iOS & Android |
| Battery | 21 days | 8 days |
| Always-on display | ✅ | ✅ |
| GPS | ❌ | ✅ |
| Cellular | ❌ | ❌ |
| Health sensors | hr, spo2, stress, sleep | ecg, hr, spo2, hrv, running power, skin temp |
| Released | Jun 30, 2025 | Oct 4, 2023 |
| Cycle length | 343 days | 1063 days |
| Cycle advice | bad | bad |
| Deals advice | good | good |
| Next model | — | Polar Vantage V4 (2026) |
The Smart Band 10's 1.72" display peaks at 1500 nits — 200 nits brighter than the Band 9 — making it more readable in sunlight, all for around $40.
Continuous heart rate, SpO2, stress, and sleep tracking — all running for 3 weeks before charging. Seven more days than the already impressive Band 9.
Full functionality on both platforms via the Mi Fitness app, including notifications, sleep analysis, and health trends. Bluetooth 5.4 for improved connection stability.
Polar Vantage V3 is one of the few sports GPS watches with on-demand ECG — usually only found on lifestyle smartwatches.
Running power measurement without a foot pod or chest strap — a significant training metric for pacing effort on hills and varied terrain.
The most detailed training load analysis in any sports watch: muscle groups targeted per session, recovery status per muscle, and long-term load trends.