[Product Information] Brand: CASIO Materials: glass [Product Description] - Introducing the lightweight and thin digital LCD model F-91 with a minimalist face design with few function descriptions. - [Waterproof function for everyday life] Equipped with waterproof function for everyday life. ・[Stopwatch] (1/100 seconds, 60 minutes, with split) ・[Alarm] Time alarm/time signal ・[Other product specifications] Please check the explanation column. explanation The lightweight and thin digital LCD model F-91 has been finished with a minimalist face design with few function descriptions. The one-tone colors of black, blue, white, and dark gray give a simple and clean impression. Biomass plastic is used for the resin material of the band. It uses renewable organic resources as raw materials and is expected to contribute to reducing environmental impact. It is also equipped with practical functions such as date/day of the week display, alarm, and stopwatch. ●Waterproof function for daily life ●Stopwatch (1/100 second, 60 minute meter, with split) ●Time alarm/time signal ●Auto calendar (February 28th system) ●12/24 Time system display switching ●LED backlight ●Battery life approximately 7 years *Battery life is calculated from the time of production as it is a monitor battery. [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.