| COROS Apex | Fitbit Charge | |
|---|---|---|
| Pricing | ||
| Starting price | $429 | $120★ |
| Subscription | ✓ None | ℹ️ Optional — $79/yr |
| Hardware | ||
| Weight | 40g | 15g★ |
| Water resistance | 5ATM | 50m |
| Battery | 24 days★ | 7 days |
| Always-on display | ❌ | ❌ |
| GPS | ✅ | ✅ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Sports GPS | Fitness Tracker |
| Buy timing | ||
| Released | Oct 15, 2025 | Sep 28, 2023 |
| Cycle advice | good★ | bad |
| Deals advice | neutral | great★ |
| Next model | — | Fitbit Charge 7 (Expected 2026) |
The 46mm Apex 4 delivers 65 hours of GPS tracking and 24 days typical use — enough for multi-day mountain events without charging. The 42mm offers 41h GPS and 15 days.
Global topographic maps with instant rendering, turn-by-turn navigation, POIs, and an underwater depth gauge — the Apex 4 is the first COROS mid-tier with a depth sensor.
Audio alerts, hands-free calling, and voice pin recording — a first for the Apex line, adding practical trail and daily-wear convenience to this mountain sports watch.
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.
The right pick depends on what you optimize for.
$357 vs $429 over 3 years · no required subscription.
24 days vs 7 days battery.
6 sensors.
15g · no required subscription.
Trail runners, ultramarathon athletes, and multisport competitors who want full offline maps and long GPS battery without paying Vertix 2S prices. The speaker and depth gauge make the Apex 4 more capable than any previous Apex for mixed adventure and triathlon use.
Full details →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 →