G-Shock Watch MR-G Bluetooth Smartwatch MRG-B2000B-1ADR. The MRG-B2000B is a full metal band model. A typical Japanese scale pattern is used on the surface of the dial, while the outer periphery of the face is cut to a shape that resembles a Japanese fan or folding screen, creating a stunning impression. The gentle concave surfaces of the hour markers resemble the curve of a samurai sword. The inner surface of the bezel, inset dials, and logo all incorporate kachi-iro. The cases are made of recrystallized titanium. Heat treating titanium creates a distinctive crystal pattern on its surface, which resembles the nie on Japanese sword blades.