Overdue for a refresh — no successor announced yet. Prices should be at their lowest
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.
Full details →Late in cycle — a new model is likely coming
Best for: Expedition athletes, mountaineers, and ultra-endurance competitors who do multi-day or multi-week events where charging is impossible. If you need GPS tracking for 140 continuous hours, no other watch comes close.
Full details →| Xiaomi Smart Band 9 | COROS Vertix | |
|---|---|---|
| Tier | Fitness Tracker | Sports GPS |
| Platform | iOS & Android | iOS & Android |
| Battery | 14 days | 140 days |
| Always-on display | ✅ | ❌ |
| GPS | ❌ | ✅ |
| Cellular | ❌ | ❌ |
| Health sensors | hr, spo2, stress, sleep | hr, spo2, hrv, training load, skin temp |
| Released | Jul 22, 2024 | Oct 1, 2023 |
| Cycle length | 365 days | 1095 days |
| Cycle advice | bad | bad |
| Deals advice | good | good |
| Next model | — | COROS Vertix 3 (2026 or 2027) |
Most fitness trackers at this price use basic LCD displays. The Smart Band 9 brings a vivid AMOLED always-on screen — rare at this price point.
Continuous heart rate, SpO2, stress, and sleep tracking — all running for 2 weeks before charging. Most smartwatches last 1–2 days.
Full functionality on both platforms via the Mi Fitness app, including notifications, sleep analysis, and health trends.
No other GPS watch currently on the market delivers 140 hours of GPS tracking — enough for most ultra-endurance events and multi-day mountain traverses.
GPS + GLONASS + Galileo + BeiDou + QZSS with dual-frequency reduces error in challenging terrain to near-meter precision.
Military-grade scratch and impact resistance for the harshest environments: extreme altitude, cold, and sustained physical stress.