Many Casio digital watches offer the ability to customize the display language, but it ultimately depends on the specific model you own. Higher-end models, particularly those with advanced features, tend to have multiple language options available in their settings. To change the display language, users typically need to access the settings menu by pressing a specific combination of buttons, which is detailed in the user manual. If you cannot locate your manual, you might consider visiting the Casio website to find a digital version or downloadable instructions for your specific watch model. Following the provided instructions can help you successfully adjust the language settings. It is important to keep in mind that not all models have this functionality, so checking the watch specifications may provide further clarity on this feature.