Legendary model! GA400 series! Looks like it's made of LEGO blocks! The most pop-style G-SHOCK! ❗️Battery is dead!❗️ ❗️It should work after a battery replacement, but there is no guarantee!❗️ Please purchase only if you understand this! Purchased new at a certain mass retailer several years ago, but it's unused. However, the instruction manual and box are missing, so I'm listing it as "Like New"! You can find the instruction manual on the Casio website by specifying Module No. 5398, which is engraved on the back cover! In excellent condition with no aging deterioration! The watch itself will be shipped via Yu-Packet Post, and changes are not possible! Even during transaction communication, I will unfortunately prioritize the first person to purchase! Thank you for your understanding... Shipping may take a few days due to my circumstances! Sorry! Usually, I will ship within 2-3 days! Thank you!