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 →First-generation product — no release history to base predictions on
Best for: Android and iPhone users who want smartwatch health features (ECG, body composition, AI coaching) and a premium display at a price well below Apple Watch or Galaxy Watch. A strong pick if multi-day battery is a priority alongside health monitoring.
Full details →| COROS Vertix | Amazfit Balance | |
|---|---|---|
| Tier | Sports GPS | Smartwatch |
| Platform | iOS & Android | iOS & Android |
| Battery | 140 days | 14 days |
| Always-on display | ❌ | ✅ |
| GPS | ✅ | ✅ |
| Cellular | ❌ | ❌ |
| Health sensors | hr, spo2, hrv, training load, skin temp | ecg, spo2, hrv, hr, body comp, stress |
| Released | Oct 1, 2023 | Nov 1, 2023 |
| Cycle length | 1095 days | null days |
| Cycle advice | bad | neutral |
| Deals advice | good | neutral |
| Next model | COROS Vertix 3 (2026 or 2027) | — |
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.
Rare combination: a bright always-on AMOLED display and 14 days of typical use without charging.
Medical-grade ECG and bioelectrical impedance body fat analysis — features usually found only on watches costing $100–$200 more.
Zepp Coach uses Amazfit's AI to build personalised workout plans, recovery recommendations, and stress management guidance.