The bezel uses recycled carbon. The bezel is manufactured by melting high-strength carbon, placing it in a mold, shaping it, and carving it out. The carbon crystals that appear on the surface look like a marble pattern, and each pattern is unique, making it unique. Recycled carbon contains luminous chips that glow in the dark or under black light. A hybrid and sustainable product that combines recycled fabric and recycled silicone. The recycled fabric on the surface is sporty and relaxing. The back side that comes into contact with the skin is covered with recycled silicone, increasing supple elasticity and reducing the effects of sweat and water. The "Plug & Rich Watch" system developed by HUMBLE RICH allows you to open and close the back cover by simply pressing the button on the side of the case. In addition, the "Plug & Rich Band" system allows you to easily change the belt with the touch of a press button.