1. Introduktion og overview
The COROS APEX 2 Pro is an advanced outdoor GPS watch engineered for durability and precision. It combines robust construction with comprehensive tracking features, making it an ideal companion for various outdoor activities and rigorous training. This manual provides essential information on setting up, operating, maintaining, and troubleshooting your device.

Figur 1: Forside view of the COROS APEX 2 Pro GPS Watch.
Nøglefunktioner:
- Forlænget batterilevetid: Up to 30 days of regular use or 75 hours in full GPS tracking mode.
- Superior GPS Accuracy: Dual-frequency GPS and all-satellite GNSS chipset for precise data.
- On-Wrist Navigation: Downloadable global Landscape and regional Topo maps.
- Advanced Training Solutions: Insights on training load, recovery, and workout building.
- Præcis pulsmåling: New 5-LED optical heart rate sensor with 4 photodetectors.
- Holdbart design: Sapphire glass screen and grade 5 titanium alloy bezel for enhanced protection.
- Wide Activity Support: Includes Run, Bike, Swim, Ski, Mountain Climb, Strength, and more.
2. Opsætning og første brug
Follow these steps to set up your COROS APEX 2 Pro watch for the first time:
- Oplad uret: Connect the charging cable to the watch and a USB power source. Ensure the watch is fully charged before first use.
- Download the COROS App: Install the official COROS app on your smartphone from your device's app store.
- Par med smartphone: Open the COROS app, create an account or log in, and follow the on-screen instructions to pair your watch via Bluetooth.
- Indledende konfiguration: The app will guide you through setting up personal information, time zone, and initial preferences.
- Opdater firmware: Check for and install any available firmware updates through the COROS app to ensure optimal performance and access to the latest features.

Figure 2: The COROS APEX 2 Pro product packaging.
3. Operating Your COROS APEX 2 Pro
3.1. Batterilevetidstyring
The APEX 2 Pro offers extended battery performance. To maximize battery life, ensure regular software updates and manage GPS modes according to your activity needs. The watch takes less than 2 hours to go from zero to full charge.

Figure 3: Battery life comparison between APEX 2 and APEX 2 Pro models.
3.2. GPS Accuracy and Navigation
The watch features a 50% higher performance antenna and an All-Satellite GNSS chipset, receiving signals from all five major satellite systems for highly precise data. The APEX 2 Pro also includes dual-frequency technology for enhanced accuracy.

Figure 4: Internal components related to GPS accuracy in COROS watches.
Utilize the downloadable global Landscape and regional Topo maps for on-wrist navigation. You can sync and follow routes created in the COROS app directly on your watch.

Figure 5: On-wrist navigation using global offline maps.
3.3. Heart Rate Monitoring
The new optical heart rate sensor features a 5-LED system with 4 photodetectors, providing advanced data accuracy for both daily tracking and activity monitoring.

Figure 6: Heart rate monitoring in action.
3.4. Activity Modes and Training Solutions
The COROS APEX 2 Pro supports a wide range of activity modes including Run, Bike, Swim, Ski, Mountain Climb, and Strength. Settings can be easily adjusted via the COROS app or directly on the watch.
Leverage advanced training solutions like training load trend, recovery timer, and workout builder to transform your data into actionable insights. The COROS app and Training Hub provide comprehensive tools for personalized training.

Figure 7: Creating training plans in the COROS Training Hub.

Figure 8: Tracking recovery and sleep quality with the COROS app.
3.5. Holdbarhed og design
The watch is built with a sapphire glass screen and a grade 5 titanium alloy bezel, providing robust protection for the internal electronic components. The 1.3-inch Always-On Memory LCD Touch Sapphire Screen and PVD-coated bezel are scratch-resistant.

Figure 9: Design features emphasizing durability.
The APEX 2 Pro is 5 ATM water resistant, suitable for open water activities and capable of withstanding pressures up to a depth of 50m. It is also temperature resistant, operating in temperatures ranging from -20°C to 50°C.

Figure 10: Water resistance of the COROS APEX 2 Pro.

Figure 11: Temperature resistance from -20°C to 50°C.
3.6. Officiel produktvideo
Video 1: Official COROS APEX 2/2 Pro overview, visasing features and use in various outdoor environments.
4. Vedligeholdelse
Proper maintenance ensures the longevity and optimal performance of your COROS APEX 2 Pro watch:
- Rensning: Rengør regelmæssigt uret og remmen med en blød kludamp klud. Undgå barske kemikalier eller slibende materialer.
- Opladning: Use only the provided charging cable. Avoid exposing the charging contacts to excessive moisture or dirt.
- Softwareopdateringer: Periodically check for and install firmware updates via the COROS app to benefit from performance improvements and new features.
- Opbevaring: Når uret ikke er i brug i længere perioder, skal det opbevares et køligt og tørt sted.
5. Fejlfinding
If you encounter issues with your COROS APEX 2 Pro, consider the following common solutions:
- Uret tænder ikke: Ensure the watch is fully charged. If it still doesn't turn on, try a soft reset by holding down the digital dial and back button simultaneously for 15 seconds.
- Problemer med GPS-signal: Sørg for at du er i et åbent område med klar view of the sky. Syncing with the COROS app before an activity can help update satellite data.
- Problemer med Bluetooth-forbindelse: Ensure Bluetooth is enabled on your phone and watch. Try unpairing and re-pairing the device in the COROS app. Restarting both devices can also resolve connectivity issues.
- Unøjagtig puls: Ensure the watch is worn snugly on your wrist, about one finger-width above the wrist bone. Clean the optical sensor regularly.
- Batteriet aflades hurtigt: Reduce the frequency of GPS recording (e.g., from Every Second to Smart Recording), turn off unnecessary notifications, or reduce screen brightness.
For more detailed troubleshooting or persistent issues, refer to the official user guide or contact COROS customer support.
6. Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | COROS |
| Modelnummer | W521 |
| Produktdimensioner | 5 x 5 x 5 tommer |
| Varens vægt | 1.87 ounces (53 gram) |
| Skærmstørrelse | 1.3 tommer |
| Display Type | Always-On Memory LCD Touch Sapphire Screen |
| Bezel-materiale | Grade 5 Titanium Alloy with PVD Coating |
| Vandmodstand | 5 ATM (50 meter) |
| Batterilevetid (regelmæssig brug) | 30 dage |
| Battery Life (Full GPS) | 75 timer |
| GPS | Built-in GPS, Dual-Freq, All-Satellite GNSS |
| Pulssensor | New optical heart rate sensor (5-LED system, 4 photodetectors) |
| Hukommelseslagringskapacitet | 32 GB |
| Operativsystem | Self-developed embedded operating system |
| Forbindelsesteknologi | Bluetooth |
7. Hvad er der i æsken
Upon opening your COROS APEX 2 Pro package, you should find the following items:
- COROS APEX 2 Pro Watch
- Watch Band
- Ladekabel
- Synopsis / Quick Start Guide
- Next-generation optical heart rate sensor (integrated)
- Free global offline landscape and topographical maps (downloadable)

Figure 12: Contents typically found in the COROS APEX 2 Pro packaging.
8. Garanti og support
For detailed warranty information and customer support, please refer to the official COROS webwebstedet eller den omfattende brugervejledning, der findes i PDF-format.
Officiel brugervejledning (PDF): Download her
For further assistance, you may contact COROS customer support directly through their official channels.





