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Casio GMW-BZ5000RC-1: First look at the ion-plated case and dial of upcoming full-metal watch

Pictured - an edited image of the leaked Casio GMW-BZ5000RC-1's dial and case against a dark starry background. (Image source: @geesgshock on Instagram - edited)
Pictured - an edited image of the leaked Casio GMW-BZ5000RC-1's dial and case against a dark starry background. (Image source: @geesgshock on Instagram - edited)
A new leaked image gives us our first look at Casio’s rainbow GMW-BZ5000RC-1 - which may use a gunmetal base with subtle color accents, rather than a full rainbow case. The update also repeats talk of limited production and pricing near €800.

A new leaked image appears to show what could be the first real look at Casio’s rumored rainbow ion-plated full-metal square, and it slightly changes the picture painted by earlier leaks. The watch is still being referred to as the GMW-BZ5000RC-1, but the execution now looks somewhat more restrained than the full rainbow case many were expecting.

Instead of a fully multicolored exterior, the case in this image appears to use a gunmetal gray base finish, which makes color show up more faintly along the edges. Blue and purple tones are visible around the case flanks and button areas, while the familiar square shape itself is largely understated. Gold-tone screws at the corners add another detail that wasn’t previously known of, or expected.

The rainbow effect looks to be pushed mainly to the inner dial frame, which shows a clear multicolor gradient around the digital display. That approach should keep the watch visually interesting without turning the entire case into a color experiment, which may explain why some early reactions have been more positive than expected.

@geesgshock also reiterates that the watch is expected to be produced in limited quantities. Pricing is still hovering around the £800 range. It is not being described as a numbered limited edition, but availability is again said to be tight enough that it won’t behave like a normal production model. 

One key detail still missing is the bracelet. The leak shows the case and dial, which leaves open whether the bracelet will carry color accents or feature a more neutral finish. At this price point, that decision could matter just as much as the case itself. 

None of this is confirmed by Casio just yet. Rather than going all-in on color, this version looks more controlled, and arguably more wearable.

Buy the Casio GWM5610-1 on Amazon.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2025 12 > Casio GMW-BZ5000RC-1: First look at the ion-plated case and dial of upcoming full-metal watch
Anubhav Sharma, 2025-12-17 (Update: 2025-12-17)