Casio: Three new G-Shock Mudmaster, Mudman, and GravityMaster watches leak

Three unreleased G-Shock watches have reportedly showed up online. Russian outlet Casioblog has hinted towards an August 2026 launch for a matching brown-and-gold trio across Casio's rugged Master of G lineup.

The leaked lineup includes the Mudmaster GG-B100XMH-5A, Mudman GW-9500MH-5, and GravityMaster GR-B300H-5A. They all share an earth-and-fire-inspired finish with steel accents. The Mudmaster variant reportedly carries a steel bezel instead of the standard carbon fiber front piece, alongside Bluetooth connectivity, a quad sensor for compass, barometer, thermometer, and step tracking, and Casio's mud-and-dust-resistant Carbon Core Guard construction. 

The Mudman will likely retain its solar charging, Multi-Band 6 radio time sync, and dual-layer LCD display built around compass navigation, while the GravityMaster has a more aviation-inspired design with a carbon-reinforced case, Bluetooth, and solar power. Reported pricing lists the Mudmaster near $460, the Mudman around $440, and the GravityMaster at roughly $320.

Casio's Master of G line has periodically gotten matching color schemes across its Gravitymaster, Mudman, and Mudmaster (or Rangeman) families, including an orange-and-yellow "Emergency Colors" from 2024 and a "Caution Yellow" trio more recently.

None of the three watches have been officially confirmed by Casio, and pricing, specs, and release timing should be treated as unverified until the company's own announcement. In the meantime, you can check out the Casio Gravitymaster GRB300-1A on Amazon.