COROS Apex 4 Bands (42mm)

COROS Apex 4 Bands — What Fits

This collection fits the COROS Apex 4 42mm only. That case uses a standard 22mm quick-release band, the same width as the Apex 46mm/Pro and the Apex 2 Pro. The larger Apex 4 46mm uses a different, wider 24mm band — it is not covered by anything sold on this page, and a 22mm band will not fit it.

If you're not certain which case size you have, check the width printed on your current strap or measure the gap between the lugs before ordering a replacement band.

Bands here use a tool-free quick-release system: a small lever on the spring bar lets you free the pin from the lug by hand, so the old band slides out and a new one clicks straight into place in seconds.

Browse the full COROS Watch Bands collection for bands that fit other Apex, Pace and Vertix models.

Band Styles For The Apex 4 (42mm)

All six of our quick-release styles are cut to the 22mm width used by the Apex 4 42mm — none of them fit the 24mm Apex 4 46mm.

If you're not sure which material suits you best, the Vornis silicone sport band is the safest all-rounder — comfortable enough for daily wear and tough enough for training.

• Vornis silicone sport — sweat-resistant and easy to rinse; the default choice for training with the Apex 4.
• Véllo nylon loop and Voren nylon loop — adjustable hook-and-loop styles for workouts.
• Solin magnetic milanese — stainless mesh with a magnetic clasp for a dressier office look.
• Mavric braided loop — a softer fabric alternative to milanese.
• Rovan magnetic loop — light enough for all-day and overnight wear.

Fitting A Band To Your Apex 4 42mm

Find the small release lever on the underside of the band near the spring bar, push it in, and angle the band away from the case — it comes free without tools. Press the new band's bars into the same lugs until both sides click into place.

Each style includes an adjustable clasp or a spare keeper loop to fit most adult wrists without trimming.

Caring For Your Apex 4 Band

Rinse the Vornis silicone band under water after sweaty sessions and let it air dry before wearing it again. Nylon and braided styles can be hand-washed with mild soap if they start to hold odor. Keep the magnetic clasp area on the Solin and Rovan bands free of metal dust so it keeps closing cleanly.

Store bands away from direct sunlight and extreme heat when not in use — prolonged UV exposure can cause silicone to stiffen slightly over time, and it can fade the color on nylon and braided styles.

Which Watches Don't Fit These Bands

The most important thing to check before ordering is your Apex 4 case size:

• The COROS Apex 4 46mm uses a 24mm band — a completely different width from the 22mm bands sold on this page. These bands do not fit the Apex 4 46mm under any circumstance.
• The COROS Vertix 2 and Vertix 2S use 26mm bands; only the original 2019 COROS Vertix uses the 22mm width sold here.
• The COROS Nomad also uses a 24mm band and is not compatible with the 22mm bands on this page.
• The COROS Pace 2 and original Pace use 20mm — a different width from the Apex 4 42mm's 22mm.