New full-metal Casio G-Shock watch spotted in certification database after recent GMW-BZ5000 appearance

We recently covered the Casio GMW-BZ5000, and it piqued a lot of interest, which is usually the case with the company's full-metal squares. In a new update, courtesy of Great G-Shock World, a new model number for the 2018-era GMW-B5000 has quietly surfaced in the same Asian certification database that outed the BZ5000 a few weeks ago. That filing all but confirms at least one more spin-off of the watch that kicked off the full-metal G-Shock frenzy, and the paperwork hints it will land after the BZ5000 reaches stores - most likely late this year or early 2026.

The blog post includes two main rumors circling Tokyo’s reseller forums:

• A "black-out" version of the classic stainless GMW-B5000D-1 featured in the cover image (curr. $500 on Amazon) - essentially the B5000’s 2018 launch livery, re-imagined in black IP coating to mimic the very first DW-5000C color scheme.
• A wilder material experiment - either grade-2 titanium or the recrystallized steel Casio used on the recent GMW-B5000PG.

Neither is locked in, but both will align with Casio’s trend of revisiting its greatest hits every few years.

From a collector’s standpoint the timing makes sense. The square-case BZ5000 (with its new display and MIP crystal panel) is aimed at the upper end of the market - Japanese production, rumored four-figure pricing and a design that's already creating a buzz. Still, one has to wonder if yet another color tweak is enough. The B5000 catalogue is already crowded with standard steels, "Bruised Blue" IP, rainbow ion, Aged IP, gold, and the rest. Unless the mysterious new reference brings a genuine material leap (titanium would certainly qualify), the risk of oversaturation is real.

Domestic listings peg the stainless GMW-B5000D-1JF around the low-¥60,000s (~$415) - not cheap, but far south of its 2018 launch premium. A black IP or titanium version would almost certainly break the ¥70,000 (~$484) barrier, yet still undercut the BZ5000’s rumored ¥100,000-(~$692) plus tag.

Casio’s certification trail is rarely wrong, so a fresh GMW-B5000 variant is almost certainly on the way. It could be a full-titanium timepiece or just another colorway. When the reference number or teaser image for the same leaks, we’ll post an update.