Casio has just introduced its latest MT-G series watches to the US market, and excitement is brewing. The MTGB4000 models, featuring a sleek carbon-metal frame, solar charging, Multi-Band 6 radio reception, and Bluetooth connectivity, are now available for purchase. Priced at $1,250 and $1,350, these watches are ready to impress.
After weeks of anticipation, the MTGB4000-1A and MTGB4000B-1A2 are now accessible to US buyers through the G-Shock online store. While they maintain the iconic MT-G label, these timepieces boast significant upgrades. Casio’s engineers used advanced AI tools to redesign the Dual Core Guard structure, blending carbon-fiber plates with stainless-steel components. This hybrid frame, along with a screw-less lug system, minimizes shock transfer. Despite its slim 56.6 × 45.3 × 14.4 mm profile, the watch offers a robust 200-meter water resistance and G-Shock’s Triple G Resist certification, ensuring durability against shock, vibration, and centrifugal force.
The Tough Solar charging feature promises an impressive five-month lifespan, extendable to 18 months in power-save mode. Meanwhile, Multi-Band 6 ensures precise timekeeping. A convenient Bluetooth connection to the Casio Watches app enhances functionality, offering one-touch world-time adjustment, a phone finder, automatic hand calibration, and access to nearly 300 city presets. With its 24-hour stopwatch and countdown timer, plus a bright Super Illuminator LED, this watch is ideal for adventurers.
The MTGB4000-1A, priced at $1,250, features a stainless-steel bezel with raw carbon accents and a black resin strap. Meanwhile, the MTGB4000B-1A2, available for $1,350, sports a dark ion-plated bezel, midnight-blue carbon frame, and matching hardware. Both models weigh 112 grams, lighter than previous MT-G models due to their carbon composite mid-case and absence of metal screws at the lugs. High-end touches include a domed sapphire crystal with inner anti-reflective coating, a knurled screw-lock crown, and Neobrite-filled indices.
These timepieces are available for immediate purchase on the G-Shock US site, complete with free domestic shipping and a standard one-year warranty, extendable to three years through Casio’s registration program. With the history of fast sell-outs for MT-G models, interested buyers should act quickly, especially for the stealthy B-1A2 variant, which offers a rich feature set in one of Casio’s darkest designs.
For those who appreciated the MTG-B3000 but sought a bolder aesthetic, the MTGB4000 delivers an impressive blend of carbon technology, AI-driven design, and classic G-Shock attributes, now without the need for international import fees. While feedback on the design and AI influence has been mixed, the MTGB4000 series remains a hot topic among enthusiasts.






