It's not working because the battery is dead! There are no signs of use, but it has been stored at home for a long time. There is some white powder on the belt. There is no stickiness or hydrolysis. CASIO G-SHOCK DW-9100ZJ-1T RISEMAN MEN IN BLACK MIB Black Gray Diving Frog ☆This is a used item sold as is, and there may be some minor scratches and scuffs. Please consider this only if you understand. ☆USED items are not guaranteed. Regardless of whether they are working or junk, if maintenance is required, it will be the responsibility of the buyer. ☆The photos posted may differ from the actual color, so please understand. ☆We do not accept cancellations, returns, or claims after purchase, so please consider carefully. ☆Please ask any questions before purchasing. However, we may not be able to respond to excessive questions, so thank you for your understanding. Casio G-Shock g-shock