Casio Vintage Digital - Silver - 35mm

The approximate battery life is typically around 3 years for a standard CR2016 or similar coin cell battery, but this can vary with usage of the backlight and alarm.

No, the watch is rated for 30-meter water resistance, which is suitable for splashes and rain but not for swimming or showering.

Adjusting the stainless steel bracelet usually involves a clasp mechanism that can be slid to find the right fit. For precise sizing, it's recommended to visit a watch repair shop or jeweler to add or remove links.

Mineral crystal is relatively durable but can be scratched over time with normal wear. It is less scratch-resistant than sapphire crystal but is more impact-resistant.

The 1/10 second stopwatch measures time in increments of one-tenth of a second, providing higher precision for short-duration timings.

Yes, the watch features an automatic calendar that displays the day and date, and it generally adjusts for month lengths but may require manual adjustment for leap years.

The approximate case diameter is 35mm.

Press the `Light` button to check if the backlight activates. If not, ensure the battery is functional. If the issue persists, it may require battery replacement or servicing.

Recalibrate the time by following the setup instructions. Ensure the watch is not near strong magnetic fields, which can affect accuracy.

Verify that the alarm is correctly set and activated. Check that the alarm signal is not turned off in the settings.

Manually reset the date and day using the setup procedure. Ensure the automatic calendar is correctly configured for the current year.

The bracelet may need adjustment. Consult a jeweler or watch repair shop for professional resizing, or carefully attempt to remove/add links yourself following online guides for this specific clasp type.