Key Takeaways
1. Black and Bold Red Series: Casio is releasing a collection of five G-Shock models with a matte black design and red accents, including the DW-5600BBR-1 and GA-B2100BBR-1A, expected to be a limited release.
2. MTG-B4000 Launch: The MTG-B4000 watch features a sleeker design and maintains key features like Tough Solar charging and Bluetooth capability, with a launch expected in June.
3. G-Steel’s First Four-Digit Model: A new GST-B1000 model has been identified, potentially indicating a flagship status within the G-Steel lineup, although no images are available yet.
4. New G-Lide GBX-100S: The GBX-100S model updates the previous version with translucent designs and expected features like tide data, with two confirmed color options set for summer release.
5. Pro Trek Lume Dial Series: Two new Pro Trek models, PRW-35LD-5 and PRW-35TLD-7, will feature full-lume dials with enhanced glow technology, set for release in Japan this May.
April has proven to be an exceptionally busy month for leaks surrounding Casio’s upcoming products. With new models and updates to existing watches, this month has shown a remarkable variety of G-Shock watches that are set to be released in the coming weeks, specifically in May and throughout the summer. Here’s what we’ve gathered so far.
The Black and Bold Red Series
Let’s kick things off with the Black and Bold Red series. Initially, we saw a quiet leak for the DW-5600BBR-1, and this has now expanded into a collection of five watches, confirmed by fresh images and posts from collectors on Instagram. In addition to the DW-5600BBR-1, the lineup includes the larger GX-56BBR-1A, the round digital GA-700BBR-1A, the newer GD-0100BBR-1, and the popular “CasiOak” GA-B2100BBR-1A. All five models sport the same matte black resin design with red accents on their displays. Considering Casio’s history of cohesive color collections, such as the Neo Tokyo series, this will likely be a limited release. And it looks really stylish.
The MTG-B4000 and More
Next up, the MTG-B4000 appears to be Casio’s most wearable MT-G watch so far. Recent leaks have shown two versions – one featuring brushed steel and another with a bluish-gray finish – both designed with sleeker lugs and a more elegant form compared to the bulkier MTG-B3000. It’s expected to maintain key features like Tough Solar charging, Multi-Band 6 radio sync, and Bluetooth capability. June seems to be the expected launch month for this model.
Then we have the newly leaked “Hidden Shine” or “Hidden Glare” series, which boasts four frosty white resin models with cool blue highlights and dark LCDs. The collection includes the GA-110HDS-7A, GA-2100HDS-7A, GA-700HDS-7A, and DW-6900HDS-7D. This series takes a softer approach visually, drawing inspiration from winter with matte white finishes, subtle metallic blue accents, and familiar watch shapes.
Exciting Developments in G-Steel
Perhaps the most intriguing news comes from the G-Steel category. A model labeled GST-B1000 has surfaced in certification documents, marking it as the first G-Steel watch with a four-digit number. This change in naming likely indicates ambitions for a flagship model, especially since Casio has used similar numbering for its top-tier Mudmaster and Rangeman watches. Sadly, we haven’t seen any images yet, but there’s a lot of excitement that this could represent a significant upgrade to the current GST lineup.
One of the standout summer releases is a new version of the G-Lide called the GBX-100S. This model updates the older GBX-100, incorporating translucent skeleton shells and brushed stainless-steel bezels. So far, two models have been confirmed: a blue split-band and an all-black version. Features like tide data, moon phases, and sunrise/sunset timings via Bluetooth are expected to be included.
In terms of seasonal releases, the Casio Surfrider Foundation G-5600UE is returning after a quick sell-out in 2024. The new version is rumored to feature brighter “summer” colors, but it will likely continue to use recycled or eco-friendly resin, just like its predecessor.
Meanwhile, Casio has subtly hinted at a G-Shock collaboration with Indian street artist Mooze. This upcoming GA-2100 collaboration features a black resin case adorned with bold red graphics on the strap and dial. Based on the artwork we’ve seen, the theme seems to merge graffiti elements with tiger imagery, alongside the phrase “Shock OK Please.” This design is set to be unveiled at G-Shock’s Connaught Place store in Delhi.
New Releases from Pro Trek
From the Pro Trek side, two full-lume dial models are set for release in Japan this May. The PRW-35LD-5 and PRW-35TLD-7 are part of a new “Lume Dial” series that combines LED backlighting with phosphorescent panels for a longer-lasting glow. The 35TLD-7 features premium materials like titanium and sapphire, while the 35LD-5 comes with a black ion-plated bezel and resin strap. Both models include pressure/temperature sensors, MultiBand 6, and Tough Solar charging.
Moreover, confirmed releases for May include the MTG-B2000YBD-2A, a stylish premium watch with a black/blue-gray ion-plated finish, the Casio AQ-S820 series, and the GBA-950 series, which upgrades the older GBA-900 fitness line with a better strap fit, new bezel design, and standard Bluetooth-connected activity tracking.
Finally, Casio is launching two limited-edition anime collaborations based on the popular series Haikyu!!. The designs based on the GA-B2100 showcase team colors, custom straps, and packaging inspired by Karasuno and Nekoma. These are expected to sell out fast, similar to Casio’s previous anime releases.
If April is any indication, Casio is preparing for a busy summer ahead.








