The concept colour is yellow, the hue featured on the very first FROGMAN, the DW-6300, and one of the colours that is symbolic of the line. The crown, buttons, and screws are treated with gold IP. Sapphire crystal is press-fit into the titanium screw-lock case back to ensure a highly airtight structure while maintaining the built-in antenna’s radio wave reception sensitivity. Casio passion for refinement down to the finest details is evident everywhere in the design, with gold vapour deposition, and engravings of the first-generation FROGMAN diving frog character, as well as the words “G-SHOCK 40TH” and “FROGMAN 30TH.”

*Due to the screw-lock construction of the case back, the orientation of the logo and lettering on it may not match up perfectly with the dial.

The vivid yellow fluoro-rubber Dura Soft band is highly resistant to staining and hydrolysis. With its flexibility, it offers a comfortable fit on the wrist, as does the specially developed, interchangeable pure titanium band with its many moveable parts. Painstaking processes of treating each link with a deep-layer hardening process and diamond-like carbon (DLC) coating prior to assembly give the titanium band a high-quality, intricate makeup. The band is also extendable so it can even be worn over a wetsuit. Use the dedicated tool to remove the side pins while pressing the buttons on the lugs’ undersides to quickly and easily swap out the band.

Lightweight, rust-resistant titanium is used for key exterior components — from the case, bezel, and case back, to the crown, buttons, and screws. The watch is made up of an intricate combination of over 70 exterior components, achieving a powerful and beautiful form. A protective structure offers face-guarding functionality with buffers made of fluoro rubber installed in the space between the bezel and case. A deep-layer hardening process and DLC coating provide even greater strength and abrasion resistance. The case incorporates a crown and case back that both feature a screw-lock construction. These and other features throughout the design keep the watch air-tight to ensure water resistance for diving.

*Some parts are not shown in the photo.
*Image shows the MRG-BF1000R-1A.

The dial features large index marks that glow in the dark to maintain readability underwater. Recessed portions on the top surface are hand-painted, yielding a thick coating for a more vibrant glow than can be achieved with printing. While applying the coatings evenly is challenging due to the amount of surface area, each piece is carefully finished individually by highly skilled workers employing sophisticated artisanal techniques.