[Product Information] Brand: CASIO Materials: glass [Product Description] ・[Size] Case size (length x width x thickness): 48.1 x 47 x 13.9 (approx. mm), belt: width approx. 19 (buckle side) ~ 25 (case side) mm, lug width approx. 18 mm, band can be attached Size: 145-215 (approx. mm), weight: approx. 40g ・[Material] Case: Resin, Band: Polyurethane, Windshield: Resin glass ・[Waterproof performance] 5 ATM water resistant ・[Accessories] Japanese manual (copy), foreign language manual booklet, plain general-purpose box (not a Casio box) explanation [Main functions] ●Stopwatch (1/100 second, 60 minute meter, with split) ●Time alarm/time signal ●Auto calendar ●12/24 hour display switching ●LED light ●Accuracy: Average monthly difference ±30 seconds ●Battery life: Approximately 7 years (*Values ​​are when the battery is replaced with a new one after purchase.The battery that is pre-installed in the watch at the time of purchase is checked for the functions and performance of the watch built in at the time of manufacture.) (This is a monitor battery, so it will run out in a short period of time.) [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.