[Product Information] Brand: SEIKO Materials: [Product Description] ・SEIKO U.S. limited model ・[Size/Weight] Case size (length x width x thickness): 47.7 x 45 x 13.2 (approx. mm), stainless steel belt: width approx. 20 mm (buckle side) ~ 22 mm (case side), silicone belt width approx. 20 mm ( Buckle side)~25mm (case side), lug width: approx. 22mm, arm circumference length (longest) 205mm, weight when stainless steel belt is attached: approx. 203g ・[Materials] Case: Stainless steel, Band: Stainless steel (replacement silicone band included), Windshield: Sapphire crystal (inner surface non-reflective coating) ・[Caliber No.] 4R36 automatic winding (with manual winding, second hand stop function), [waterproofing performance] Waterproof for 200m diving ・[Accessories] Special presentation box, Japanese instruction manual (copy) explanation [Main specifications] ●Caliber No.: 4R36 ●Drive system: Mechanical automatic winding (with hand winding) ●Accuracy: +45 seconds to -35 seconds per day ●Driving period: Lasts approximately 41 hours at maximum winding ●Waterproof: Waterproof for 200m diving ●Case material: stainless steel ●Glass material: sapphire crystal ●Glass coating: Inner non-reflective coating ●Band material: Stainless steel (replacement silicone band included) ●Back cover “SPECIAL EDITION” notation ●Reverse rotation prevention bezel [Important Note - For Overseas Customers] Thank you for purchasing this product. Please read the following important notes carefully before using this product overseas. 1. Legislation and safety standards This product complies with Japanese safety standards. Please check compatibility with local regulations and safety standards before use in your country. Certain product categories (electronics, cosmetics, food, etc.) may require certification from the importing country. 2.About electrical products This product complies with Japanese power specifications (100V, 50/60Hz). If your country has different power specifications, you will need an appropriate transformer or conversion plug. Using an inappropriate power source may cause malfunction or accident. 3.Language and manual Product instructions and displays may only be in Japanese. The English version of the manual can be downloaded from our website. 4. Warranty and after-sales service International warranty coverage is limited. Please check the warranty for details. After-sales service and repair support overseas may be limited.