[Product Information] Brand: SEIKO Materials: glass [Product Description] explanation Product description ●Drive method: Automatic winding ●Specifications Calendar (date/day of the week) Case/belt material: Stainless steel Case back screw back (see-through back) Glass material Crystal glass Accuracy Average daily difference: ±60 seconds Waterproof Waterproof for daily life ●Size (approx.) H35 x W35 x D11mm (excluding lugs and crown), weight approx. 100g From Amazon The Seiko Men's Automatic White Dial Stainless Steel Watch boasts high-tech Japanese automatic movement hidden behind classic analog styling. Precise 21-jewel Japanese automatic movement keeps this watch functioning without a battery--it powers automatically with the movement of your arm. This high -tech feature is hidden away behind the watch's white dial, which boasts luminous gold-toned hands and baton hour markers. The dial also sports a date window at the three o'clock position, and the entire dial is protected by a Hardlex mineral crystal. Keeping all of this securely on your wrist is a brushed-and-polished silver-toned stainless steel link bracelet that closes with a fold-over clasp. Other features include a stainless steel case with an exhibition case back and water-resistance to 99 feet (30 meters). [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.