[Product Information] Brand: CITIZEN Materials: glass [Product Description] explanation CITIZEN C7 RECORD LABEL is a brand that continues to record the diverse individuality of Citizen. In 1965, the model ``C7'' was inspired by the ``Crystal Seven'', which was created as the first Japanese-made crystal glass watch, and the variation of the model ``C7'' has expanded. Adopts a classic dial and adds a stylish impression with coloring. It has a design that can be worn on or off. Adopts crystal glass, which is the identity of Crystal Seven . The day window located at 12 o'clock is designed in a heptagonal shape, named after the word Seven . / Caliber: 8200 / Static accuracy: -20~+40 seconds per day * / Drive time approximately 40 hours (maximum winding) / Mechanical wristwatch / Automatic + manual winding / Frequency of vibration: 21,600 times / hour / Number of stones : 21 jewels / Day and date display / Quick date adjustment function / Quick day adjustment function / / *Accuracy is measured with the movement in a static state. Due to the characteristics of mechanical watches, the daily difference range may be exceeded depending on the conditions of use (time when the watch is worn, posture of the watch, movement of the arm, winding of the mainspring, etc.). The driving time is a guideline. / 5 ATM water resistant / Luminous (hands + index) / Number of stones: 21 stones / See-through back [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.