Great model! GD-X6900 series! Very popular large three-eyed digital! The most beautiful BLACK G-SHOCK! Purchased new at a certain mass retailer a few years ago, but it's unused. However, the instruction manual and box are missing, so I'm listing it as "like new"! The instruction manual can be found by searching for module No. 3420 engraved on the back cover! The battery life on the specifications is 10 years! Since the light and alarm are also unused, I think it will still work, but I cannot guarantee the battery. There is no aging, it's an extremely beautiful item! The item 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! I'm sorry! Usually, I will ship within 2-3 days! Thank you!