Style, comfort and local support — all built into our replacement straps for the Apex 4 (42mm).
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Frequently Asked Questions
Q. What size width strap does the Apex 4 (42mm) take?
The Apex 4 (42mm) takes any generic watch strap that has a band width (also known as Lug Width) of 22mm.
Q. What year was the Apex 4 (42mm) released?
It was released by Coros in 2025.
Q. How can I tell if my watch is the Coros Apex 4 (42mm)?
The easiest way to identify this is by either looking on the underside of your watch which should show the model name or model number (WAPX4-BLK-42, WAPX4-WHT-42 for the Apex 4 (42mm)). Alternatively, the app on your phone that the watch connects to will usually tell you what model you have.
Q. How do you change the watch bands on the Apex 4 (42mm)?
These can be easily changed by removing the pins on the watch strap and attaching your new strap. The video guide below has a great guide on how to change these wristwatch bands.
Brand Name
Coros
Model Number
WAPX4-BLK-42,
WAPX4-WHT-42
Model Name
Apex 4 (42mm)
Year of Release
2025