COROS APEX 4

COROS APEX 4 Sports Watch User Manual

Model: APEX 4 (42mm)

Introduction

Welcome to the COROS APEX 4 Sports Watch user manual. This guide provides essential information for setting up, operating, maintaining, and troubleshooting your new device. The COROS APEX 4 is a high-precision GPS sports watch designed for trail running and various outdoor activities, featuring 5ATM waterproofing, navigation capabilities, music storage, voice memo functionality, and map support.

COROS APEX 4 Sports Watch (42mm White)

Image: The COROS APEX 4 Sports Watch in white, showcasing its design.

Safety Information

Please read all safety information before using your COROS APEX 4. Failure to follow these instructions could result in injury, electric shock, fire, or other damage. Keep the device away from extreme temperatures, direct sunlight, and water (beyond its 5ATM rating). Do not attempt to disassemble or repair the device yourself. Consult a professional for service.

Package Contents

Ensure all items are present in the box:

  • COROS APEX 4 Sports Watch (42mm)
  • Keychain-style USB Type-C Charging Adapter
  • User Manual (this document)

Note: A USB Type-C charging cable is not included in the package. Please use a compatible USB Type-C 2.0/3.0 charging cable. Original COROS charging cables from previous models are not compatible with the APEX 4.

What's in the box for COROS APEX 4

Image: Contents of the COROS APEX 4 package, including the watch and charging adapter.

Setup

1. Initial Charging

  1. Connect the included keychain-style USB Type-C charging adapter to a compatible USB Type-C 2.0/3.0 charging cable (not included).
  2. Plug the charging cable into a USB power source.
  3. Attach the watch to the charging adapter. The watch will display a charging indicator.
  4. Charge the watch until it reaches 100% battery.

2. Pairing with Your Smartphone

  1. Download and install the COROS app from your smartphone's app store (iOS or Android).
  2. Open the COROS app and create an account or log in.
  3. Turn on your COROS APEX 4 watch.
  4. In the COROS app, follow the on-screen instructions to add a new device. The app will guide you through the pairing process via Bluetooth.
  5. Confirm the pairing code displayed on both your watch and smartphone.

3. Basic Settings

After pairing, the app will prompt you to set up basic preferences such as language, time zone, and units of measurement. You can further customize watch faces and data fields through the COROS app.

Operating the Watch

Navigation and Controls

The COROS APEX 4 features a digital dial and a back button for navigation. Rotate the digital dial to scroll through menus and data screens. Press the digital dial to select an option or start an activity. Use the back button to return to the previous screen or mark a lap during an activity.

Activity Modes

The watch supports over 30 activity modes, including:

  • Running (Trail Run, Track Run, Indoor Run)
  • Cycling (Road, Mountain, Indoor)
  • Swimming (Pool, Open Water)
  • Hiking & Climbing
  • Skiing & Snowboarding
  • Strength Training
  • Triathlon

To start an activity:

  1. From the watch face, press the digital dial to enter the main menu.
  2. Scroll to and select your desired activity mode.
  3. Wait for GPS signal acquisition (if applicable).
  4. Press the digital dial again to start the activity.
COROS APEX 4 showing various activity modes like hiking, climbing, and skiing

Image: The COROS APEX 4 supports a wide range of activity modes for diverse adventures.

GPS and Navigation

The APEX 4 features high-precision GPS with a dual satellite system (L1+L5) for accurate tracking even in challenging environments like dense forests or steep cliffs. It supports global maps with two map layers (landscape and topographical) that include road and trail names. Turn-by-turn directions, Points of Interest (POI), and a 'return to start' function are available for navigation.

COROS APEX 4 displaying a detailed map with navigation route

Image: The COROS APEX 4 displaying a detailed map with a navigation route, showing improved map and graphic display speed.

Microphone and Speaker

The APEX 4 includes both a microphone and a speaker. This allows for:

  • Voice Memos: Record voice notes during activities to capture data or strategy information.
  • Hands-Free Calls: Make and receive calls directly from your watch when connected to your smartphone.
  • Audio Alerts: Receive audible notifications for pace, time, distance, and turn-by-turn directions during workouts.
Diagram showing the microphone and speaker on the COROS APEX 4

Image: A diagram highlighting the microphone and speaker components on the COROS APEX 4.

Smart Features and Connectivity

The APEX 4 connects to your smartphone via Bluetooth, enabling:

  • Notifications: Receive customizable alerts for calls, text messages, and major apps (e.g., Facebook, Line, Instagram).
  • Third-Party App Sync: Sync data with popular fitness platforms like Strava, Nike Run Club, and Apple Health.
  • Action Camera Control: Control GoPro and Insta360 cameras directly from your watch.
  • Find My Phone: A convenient feature to locate your paired smartphone.
Icons representing third-party app integration with COROS APEX 4

Image: Icons illustrating the COROS APEX 4's compatibility with various third-party apps and action cameras.

Health Monitoring

The watch provides comprehensive health tracking:

  • Sleep Tracking: Monitors sleep quality, duration, and stages (Awake, REM, Light, Deep).
  • Heart Rate (HR): Continuous heart rate monitoring.
  • Heart Rate Variability (HRV): Measures HRV for recovery insights.
  • Stress Level: Tracks stress levels throughout the day.
  • Blood Oxygen (SpO2): Measures blood oxygen saturation.
COROS APEX 4 displaying sleep tracking data on watch and phone app

Image: The COROS APEX 4 and its companion app displaying detailed sleep quality data.

COROS APEX 4 displaying wellness check data including heart rate, HRV, stress, and SpO2

Image: The COROS APEX 4 and app showing a wellness check with heart rate, HRV, stress, and SpO2 readings.

Maintenance

Cleaning Your Watch

Regularly clean your watch and band to prevent skin irritation and maintain performance. Use a soft, damp cloth to wipe the watch body and sensors. For the band, follow the manufacturer's recommendations. Avoid harsh chemicals or abrasive materials.

Water Resistance

The COROS APEX 4 has a 5ATM water resistance rating, making it suitable for swimming and showering. It is not recommended for scuba diving or high-speed water sports. Ensure the charging port is dry before charging.

Battery Care

To maximize battery lifespan:

  • Avoid fully discharging the battery frequently.
  • Store the watch in a cool, dry place when not in use for extended periods.
  • Use only the provided charging adapter and a compatible USB Type-C 2.0/3.0 cable.
COROS APEX 4 displaying battery life information

Image: The COROS APEX 4 displaying its long battery life, with up to 41 hours for the 42mm model in full GPS mode.

Troubleshooting

Common Issues

  • Watch not turning on: Ensure the watch is fully charged.
  • GPS inaccuracy: Ensure you are in an open area with a clear view of the sky. Avoid tall buildings or dense foliage.
  • Bluetooth pairing issues: Ensure Bluetooth is enabled on your phone and watch. Try restarting both devices.
  • Notifications not appearing: Check notification settings in the COROS app and your phone's system settings.
  • Weak notification vibration: This is a known characteristic; ensure audio alerts are enabled if vibration is insufficient.

Factory Reset

If you experience persistent issues, a factory reset may resolve them. This will erase all data on your watch. Consult the COROS app or official support website for detailed instructions on how to perform a factory reset.

Specifications

ModelCOROS APEX 4 (42mm)
Display Size1.3 inches (3rd Generation MIP Always-On Display)
Operating SystemLinux
ConnectivityBluetooth
GPSBuilt-in, High-Precision Dual Satellite System (L1+L5)
Water Resistance5 ATM (50 meters)
Battery Life (42mm model)Up to 41 hours in full satellite system GPS mode
Bezel MaterialGrade 5 Titanium
Screen MaterialSapphire Glass
UPC810005784757

Note: Product dimensions (44 x 83 x 166 mm) refer to the packaging size, not the watch itself.

Exploded view of COROS APEX 4 showing titanium bezel and sapphire glass

Image: An exploded view of the COROS APEX 4, highlighting its durable Grade 5 titanium bezel and scratch-resistant sapphire glass.

Warranty and Support

Your COROS APEX 4 Sports Watch is covered by a manufacturer's warranty. For detailed warranty terms and conditions, please refer to the official COROS website or contact COROS customer support. For technical assistance, troubleshooting, or service requests, visit the COROS support page or contact their customer service team directly.

Official COROS Website: www.coros.com

No Official Product Videos Found

No official product videos from the seller were found in the provided data. Please refer to the COROS official website or authorized channels for any available video tutorials or product demonstrations.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.