This is a Casio G-Shock. It appears the module and back cover serial numbers are different. The band also appears to be aftermarket. The dial size is shown in the latter half of the images, so please refer to them. Since I am listing multiple items, please refer to the images for scratches and dirt. I have replaced the battery, disinfected with alcohol, and confirmed the operation before listing, but I do not guarantee continuous operation in the future, so please understand. This is a one-of-a-kind used item, so I do not recommend it to those who are looking for the quality of a current new watch. If you have any questions, please feel free to ask. Instant purchase is welcome. If there are no purchases for a long period of time, I may withdraw the listing without notice, please forgive me. Followers will receive a flat 3% discount on their first purchase. Repeat customers will receive a flat 5% discount from their second purchase onwards. Please let me know in the comments, and I will make the changes. I am mainly selling watches, and I am listing various items to organize my collection. I would be grateful if you would take a look at my other items as well. ↓↓↓↓↓ #PopotaWatchMen