Do these straps fit the OnePlus Watch 3?

Yes. This page covers both OnePlus Watch 3 case sizes: the 46mm model, which uses 22mm straps, and the 43mm model, which uses 18mm straps. Check your case size before ordering, since the two look alike at a glance.

Will an 18mm strap fit my Watch 3 46mm?

No. The 46mm Watch 3 uses 22mm straps — 18mm straps are made for the smaller 43mm case only and will be too narrow to seat properly on the 46mm lugs. Match the strap width to your exact case size.

How do I know which Watch 3 size I have?

Check the case size in your watch's settings menu or on the original box — it will say either 46mm or 43mm. You can also measure the lug-to-lug width directly if the packaging isn't available.

How do I swap the strap on my OnePlus Watch 3?

Push the small lever on the underside of the strap toward the case to release the spring bar, then press the new strap's spring bar into the same lug holes until it clicks. The swap takes seconds and no extra tools.

What styles are available for the 43mm Watch 3?

The 43mm case currently ships in the Rovan magnetic loop, a lightweight style that also works well for sleep tracking. The 46mm case has access to all six of our quick-release styles, including silicone, nylon and magnetic milanese.

How do I clean these straps?

Rinse the Vornis silicone strap under water with mild soap and let it dry fully before wearing it again. The nylon loop styles can be hand-washed and air-dried. Wipe the Rovan magnetic loop and the Solin magnetic milanese with a damp cloth rather than soaking them.

OnePlus Watch 3 Straps (46mm & 43mm)

Choose your watch size: Watch 3 46mm (22mm) · Watch 3 43mm (18mm)

Straps for the OnePlus Watch 3, launched in 2025. The 46mm case takes 22mm straps and the 43mm case takes 18mm — the two sizes are not interchangeable.

Part of our OnePlus Watch Straps range.

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