To create a robust watch with water resistance up to 1300 meters, the design features a stable, solid square form. All unnecessary decorations have been eliminated, focusing solely on essential functions. The side surface is made as smooth as possible, and the bezel has large cutouts so it can be operated even while wearing gloves. The front features a rare shape for a non-standard model, with the quarter section from 12 to 3 o'clock (excluding the crown) rotated and copied at 90-degree intervals—this is a distinctive feature of this model. The four screws that secure the glass are also beautifully designed to prevent the glass from popping out when internal pressure rises as the watch surfaces from saturation diving. For visibility in the dark depths where light does not reach, each hand has a different shape, and the dial is designed to match the hands. This design embodies CITIZEN's idea of 'functional beauty,' born from the pursuit of functionality and the elimination of waste for use in harsh environments.

A bezel shape that is easy to turn even when wearing gloves. The crown is designed not to touch the wrist. A form born from function. A rounded yet powerful and reassuring form.

A case design without lugs, considering the fit on the wrist.

Large recessed and protruding shapes to protect the bezel at four points and to enhance the operability of the unidirectional locking mechanism.

The case back is recessed into the case, resulting in a design with minimal unevenness.

The solid square case, with the quarter section from 12 to 3 o'clock rotated and copied at 90-degree intervals, provides strength and reassurance.

A dial design that allows you to quickly recognize the 12 o'clock position and, in combination with the hands, ensures accurate time reading.

For visibility, all three hands are designed with different shapes.