This is a fully functional original Speed Model. The battery was replaced on September 9, 2025. I have the battery warranty, and I'll gladly give it to you if you'd like. It's a screw-back model with a small light bulb and Module 901, an old version. I've kept it in excellent condition, carefully storing it with silica gel to prevent hydrolysis. It looks almost new. The only flaw is a slight, barely noticeable mark on the band, which doesn't bother even a perfectionist like me, so I don't think it's a problem. I put a dedicated LCD protective film on it from the beginning because I didn't want the LCD screen to get scratched. Therefore, the LCD screen is also scratch-free. If you're concerned about the protective film, please remove it after purchase. I'm happy to answer any questions you may have. I'm open to price negotiations. - Brand: CASIO - Model Name: G-SHOCK DW-5600C-1V Speed Model - Water Resistance: 200M - Functions: Alarm, Stopwatch, Chronograph - Back Material: Stainless Steel Accessories: Body only Thank you for looking. Operation...Good Scratches/Cracks...None