New Casio G-Shock rainbow ion-plated full-metal GMW-BZ5000 watch tipped to release in 2026
As the Casio G-Shock GMW-BZ5000 series is still rolling out to more countries, there's a new leak out and about, which states that the full-metal squares are about to get a rainbow treatment in 2026. The tip points to a limited‑edition, rainbow‑ion‑plated GMW‑BZ5000RC‑1 - the first special in the new BZ5000 line.
According to @geesgshock on Instagram, Casio is preparing a model referenced as GMW‑BZ5000RC‑1, described as a rainbow ion-plated version of the GMW‑BZ5000. The same post mentions that it as a limited edition planned for an early‑to‑mid‑2026 release window, which will expand the still‑young BZ5000 family beyond its core finishes - silver, gold, and black.
The shared image is explicitly presented as a user-designed mock‑up used only to catch the eye, not as a representation of the final watch. No dial layout, colour blocking, or case‑bracelet gradient details are being leaked, so any specific design expectations should be treated as pure speculation.
For additional reference, the GMW‑BZ5000 series is Casio’s latest premium take on the original G‑Shock square. The watches in the lineup feature an all‑metal case and bracelet with a high‑contrast MIP LCD, Tough Solar, Bluetooth connectivity, and Multi‑Band 6 radio control. Launch variants have so far covered standard metallic tones, so a rainbow‑ion‑plated RC‑1 would give the platform a halo piece in the same spirit as earlier "rainbow" MT‑G and GMW‑B5000 models.
Casio has yet to list the GMW‑BZ5000RC‑1 on any official regional site or limited‑edition hub, and there is no press material or pricing information in circulation. Until that changes, all that can be treated as reliable is the claimed reference number, the rainbow ion‑plated design, and the rough early‑to‑mid‑2026 timing. Materials, exact color execution, market availability, and production volume is still unknown.
Alternatively, check out the ion-played Casio G-Shock on Amazon.
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