This is the Seiko M725-5A00 A0 AIR DIVERS. ★★★This is an extremely rare model. ■Condition: Working Some signs of use are visible. The battery has been replaced. It is working, but all functions have not been verified for correct operation. One screw is missing from the back. ■: The strap is new. The size is adjustable. Key Features ■The world's first dive computer: Equipped with the US Navy's no-decompression dive tables, it calculates and displays all the necessary diving information. ■Multifunctionality: This diving watch for sport divers integrates the four major functions of timekeeping, diving, dive tables, and log data. ■Robust Design: The digital display features an asymmetrical design, and its solid construction gives it a sense of security and presence. 200m Water Resistance: Water resistant to 200m (JIS Class 1 dive watch), suitable for air diving. ★★★Shipping Information: To ensure the highest quality, your item will be carefully packed and shipped in a box. We generally ship via DHL or Japan Post. ※Please note that customs duties may be incurred once the item arrives in your local area, so please be aware of this. ※Your country's customs or shipping company may contact you by phone or email regarding customs clearance. Please make sure you can answer the phone. We sincerely hope that your item arrives safely and that you are satisfied with it. We appreciate your understanding and cooperation in order to ensure a smooth transaction.