1. Product Overview
The COROS APEX 46mm / APEX Pro Nylon Band is a replacement watch strap designed for compatibility with COROS APEX 46mm and APEX Pro GPS watches. This band features a durable nylon construction and a secure tang buckle closure, providing a comfortable and adjustable fit for various activities.

Image 1.1: The COROS APEX Nylon Band, shown in white, featuring its woven texture and tang buckle.
2. Installation Instructions
Follow these steps to properly install your COROS APEX Nylon Band onto your compatible COROS watch.
- Prepare Your Watch: Ensure your COROS APEX 46mm or APEX Pro watch is clean and powered off. If a previous band is installed, carefully remove it by locating the quick-release pins or spring bars and detaching them from the watch lugs.
- Identify Band Orientation: The nylon band typically has two sections. One section includes the buckle, and the other includes the adjustment holes. The buckle section usually attaches to the top lug (12 o'clock position) of the watch, and the longer section with holes attaches to the bottom lug (6 o'clock position).
- Attach the Buckle Section:
- Locate the spring bar on the buckle section of the nylon band.
- Insert one end of the spring bar into the corresponding hole on one side of the watch lug.
- Using your finger or a spring bar tool, push the other end of the spring bar inward, then align it with the hole on the opposite side of the watch lug.
- Release the spring bar, ensuring both ends are securely seated in the watch lugs. Gently tug on the band to confirm it is locked in place.
- Attach the Longer Section: Repeat the process from step 3 for the longer section of the band, attaching it to the remaining watch lugs.
- Verify Installation: Once both sections are attached, gently pull on each side of the band to ensure they are firmly secured to the watch. The band should not easily detach.

Image 2.1: Examples of COROS GPS watches, including APEX models, demonstrating the watch body where the band attaches.
3. Wearing and Adjustment
To ensure optimal comfort and sensor accuracy, proper wearing and adjustment of your COROS Nylon Band are essential.
- Positioning: Place the watch on your wrist, typically above the wrist bone.
- Fastening the Buckle: Thread the longer end of the band through the tang buckle. Insert the tang (pin) into one of the adjustment holes that provides a snug, yet comfortable, fit.
- Securing the Excess: Pass the excess band through the two keeper loops to prevent it from flapping.
- Fit Check: The band should be tight enough that the watch does not slide freely on your wrist, but not so tight that it restricts circulation or causes discomfort. For activities involving heart rate monitoring, a slightly tighter fit may be required to ensure accurate readings.
4. Care and Maintenance
Proper care will extend the life and maintain the appearance of your nylon band.
- Regular Cleaning: Clean the band regularly, especially after intense workouts or exposure to sweat, dirt, or saltwater.
- Washing: Hand wash the band with mild soap and cool water. Gently rub the band to remove any buildup. Avoid harsh chemicals or abrasive cleaners, as these can damage the nylon fibers.
- Rinsing: Rinse the band thoroughly to remove all soap residue.
- Drying: Allow the band to air dry completely before reattaching it to your watch or wearing it. Do not use direct heat sources like hair dryers, as this can deform or damage the material.
- Storage: Store the band in a clean, dry place away from direct sunlight when not in use.
5. Troubleshooting
- Band feels too loose or too tight:
- Adjust the tang buckle to a different hole. Ensure the band is snug but comfortable. For accurate heart rate monitoring, a slightly tighter fit is recommended during exercise.
- Band causes skin irritation:
- Ensure the band is clean and dry. Sweat and dirt buildup can cause irritation. If irritation persists, try loosening the band or consult a dermatologist. Some individuals may have sensitivities to certain materials.
- Band is difficult to install:
- Ensure the spring bars are correctly aligned with the watch lugs. Apply gentle pressure to compress the spring bar and guide it into place. If you are having difficulty, refer to the watch's original manual for specific band removal/installation instructions.
6. Product Specifications
| Product Name | COROS APEX 46mm / APEX Pro Nylon Band |
| Compatible Models | COROS APEX 46mm, COROS APEX Pro |
| Material | Nylon |
| Clasp Type | Tang Buckle |
| Metal Type | No Metal Type (for the band material itself, buckle may contain metal) |
| Package Dimensions | 6.18 x 4.76 x 0.91 inches |
| Item Weight | 1.45 ounces |
| ASIN | B09B1F1H9L |
7. Warranty Information
For detailed warranty information regarding your COROS APEX Nylon Band, please refer to the official COROS website or the documentation included with your original watch purchase. Warranty terms typically cover manufacturing defects but may not cover normal wear and tear or damage caused by misuse.
8. Customer Support
If you encounter any issues or have questions not addressed in this manual, please contact COROS customer support through their official website. You may find contact information, FAQs, and additional resources at www.coros.com/support.





