This is a Casio G-Shock. It has been used, so there is a sense of use, but there are no functional problems and it is still in good condition. When listing the item, I cleaned it thoroughly with alcohol as much as possible, but I don't have a brush to clean the fine parts, so if there are any areas you are concerned about, please clean them again yourself after purchase. I didn't know the details and functions of the product, so I looked it up on the manufacturer's website and found a product that seems to be the same, so I've included a screenshot of the description from that page. It seems that the G-Shock's selling point is its durability. The instruction manual (how to use it) can be found on the manufacturer's product page, so please take a look there. The "GX Series" aims to withstand shocks (Gravity) from all (X = extra) directions. The two-layer urethane bezel has hard urethane on the outside to guard against impact and soft urethane on the inside to absorb impact, enhancing the overall protection ability of the bezel. The inner protector that covers the module is made of urethane with a bellows-like cross-section. This prevents the impact from directly reaching the module. The LCD screen is covered with a protector to protect it from impact. The uneven shape of the protector surrounding the LCD screen creates a sense of strength. Furthermore, alpha gel, which has excellent shock absorption, is incorporated in four places on the inner protector: 3 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock. It is a structure that blocks the impact in multiple layers so that even if the impact is transmitted to the inside of the case, it will not be transmitted to the module itself. In terms of design, it expresses strength and sharpness. The color scheme also reflects strength, with matte black as the main color. Red, the brand color, is used as an accent. It is equipped with a world-wide radio wave reception function for 6 stations and Tough Solar, considering practicality. It is a G-SHOCK that thoroughly pursues "toughness" from both technology and design aspects.