Made of brightly colored recycled aluminum. The matte finish aluminum creates a stylish and active hand. The case is made of recycled stainless steel colored with IP treatment. SPORT COLLECTION is made of sustainable materials that are considerate of the global environment, from the case to the bezel to the strap. 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.