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| The new G-Shock GM-S2110B-8ARLSB will be a collab between Casio and Rels B - a Spanish rapper. |
If you’ve been keeping an eye on the G-Shock collaboration circuit, you already know that Casio doesn’t just pick any celebrity partner. The brand looks for authentic voices, and Spanish trap and Latin rap sensation Rels B has proven to be exactly that. After a successful first run as a brand ambassador and a full-metal release that turned heads, the duo is back with something smaller, darker, and arguably more refined.
The new G-Shock GM-S2110B-8ARLSB was teased quietly over the weekend via a third-party Instagram account (@geesgshock), and fans of both the rapper and the octagonal “CasiOak” lineage are already buzzing. Set for a June 18 release, this watch isn’t just another celebrity-branded cash grab. It’s a thoughtfully executed piece that ties together Rels B’s concert visuals, his on-stage persona, and G-Shock’s relentless pursuit of durability—now in a more wearable, slimmer package.
Who Is Rels B? A Quick Primer for the Uninitiated
For those not deep into the Latin urban scene, Rels B—real name Daniel Heredia Vidal—is a Palma de Mallorca-born rapper, singer, and producer who has quietly become one of Spain’s most influential musical exports. He also goes by the alias Skinny Flakk, a nod to his earlier, more underground work. That alias explains the “ARLSB” suffix in the model number (ARL for “Rels” flipped? Actually, it’s a creative code, but the “LSB” likely ties to “Skinny Flakk” branding – either way, collectors love a good mystery).
Rels B’s music blends chilled-out trap beats with introspective, often melancholic lyrics. He’s amassed millions of monthly listeners on streaming platforms and sold out arenas across Europe and Latin America. His aesthetic? Think oversized hoodies, vintage car culture, and an effortless cool that translates surprisingly well to wristwear.
What Makes the GM-S2110B-8ARLSB Different?
At first glance, the new watch looks like a standard GM-S2110B-8A—that’s the smaller, slimmer version of the iconic GA-2100 “CasiOak” with a brushed metal bezel and a dark grey resin band. But the devil is in the details.
Casio took the octagonal GA-2100 silhouette and dressed it in an all-dark colorway. The brushed metal bezel catches light just enough to give it a premium feel, while the negative display and matte black band keep things understated. It’s the kind of watch that whispers rather than shouts—perfect for everyday wear.
But flip it over, and the magic happens. The caseback is engraved with both the G-Shock and Rels B logos, accompanied by custom tour artwork ripped straight from the rapper’s concert imagery. A Spanish-language video accompanying the teaser hinted at this connection with the phrase “de sus conciertos” (from his concerts), confirming that the design draws directly from Rels B’s live show visuals.
And if that wasn’t enough, the watch ships in a custom aluminum flight case branded with the Rels B logo. That’s a serious upgrade from the standard cardboard box and adds real collectible value for fans who want to keep the watch pristine when it’s not on their wrist.
This Isn’t Their First Rodeo
Rels B isn’t new to the G-Shock family. He previously signed on as a brand ambassador to help launch the GM-2110, a full-metal “CasiOak” that came in five bold colorways and featured a stainless steel bracelet. That model was larger, heavier, and aimed at collectors who love that solid, premium wrist presence.
The new GM-S2110B-8ARLSB takes a different approach. It moves to the S-series case, which is noticeably slimmer and more compact. If you have smaller wrists (or simply prefer a watch that doesn’t dominate your forearm), this is a godsend. The resin band replaces the metal bracelet, shaving off weight and making it more comfortable for all-day wear. It’s the same G-Shock toughness—200m water resistance, shock resistance, world time, stopwatch, countdown timer, and alarm—but in a package that actually fits under a dress shirt cuff.
Pricing and Availability – What We Know So Far
Official pricing hasn’t been confirmed yet, but we can make an educated guess. Standard GM-S2110B-8A variants typically retail between €130 and €150 in Europe (around $140–$160 USD). Given the custom engraved caseback, the limited nature of the collaboration, and that snazzy aluminum flight case, expect the Rels B collab to carry a noticeable premium.
My prediction? Somewhere in the €170–€200 range (roughly $185–$220 USD). That’s still reasonable for a celebrity collaboration watch, especially one with actual design ties to the artist’s touring visuals rather than just a lazy logo swap.
If you can’t wait for the official June 18 drop or just want a similar vibe without the collab markup, check out the standard Casio GM-S2110-1A7 on Amazon. It’s a great entry point into the S-series CasiOak world.
👉 Buy the Casio GM-S2110-1A7 on Amazon 👈
That link takes you to a clean, neutral version of the same platform—perfect if the Rels B model sells out instantly (which, let’s be honest, it probably will).
Where to See the Teaser Yourself
The official Instagram teaser is live, and it’s worth a watch just for the concert footage spliced with macro shots of the engraved caseback. The account that first broke the news, @geesgshock, has a solid track record of early G-Shock leaks, and this one turned out to be spot-on.
Check out the original post here:
🔗 View the Rels B x G-Shock teaser on Instagram
Final Thoughts – Should You Cop?
Here’s the honest take: If you’re a Rels B fan, this is a no-brainer. The custom caseback and flight case make it a true collector’s piece, and the fact that it’s based on the more wearable S-series means you’ll actually want to wear it, not just store it in a display case.
If you’re just a G-Shock enthusiast looking for a dark, brushed-metal CasiOak, the standard GM-S2110B-8A is nearly identical on the wrist for less money. But you’ll miss out on the tour artwork engraving and the flight case. And for many collectors, those little extras are worth the premium.
The GM-S2110B-8ARLSB drops June 18. Set a reminder, follow Casio’s official channels, and maybe start practicing your best Rels B lyrics while you wait. This one’s going to move fast.
*Sources: @geesgshock on Instagram, Casio product archives, retail data for GM-S2110 series.*