Casio Vintage Series AQ-230 Unisex Analog-Digital Quartz Wristwatch

This watch features a sliding clasp and is water-resistant for everyday use. Included in the package are a Japanese instruction manual (duplicated), a foreign language instruction booklet, and a plain universal box (not a Casio box).

The main features of this watch include a dual time stopwatch (with 1/100 second and 60-minute count), a time alarm, a time signal, and an auto calendar. Users can switch between 12-hour and 24-hour displays. The accuracy of the watch is ±30 seconds per month.

The battery life of this watch is 3 years when replaced with a new battery. It is important to note that the batteries already set on the watch are monitor batteries used to check the functionality and performance of the watch, so the battery life will be shortened.

Regarding the waterproof performance, this watch is water-resistant for everyday use, meaning it can withstand the occasional splashes or light rain, but it is not suitable for swimming, showering, or other water-based activities.

The package includes a Japanese instruction manual, which is duplicated, as well as a foreign language instruction booklet to cater to a wider range of users. Additionally, the watch comes in a plain universal box, rather than a Casio-branded box.

The dual time stopwatch feature allows users to track two different time zones simultaneously, which can be particularly useful for those who travel frequently or need to coordinate with people in different time zones. The stopwatch function can measure time in 1/100-second increments and can count up to 60 minutes.

The time alarm and time signal features provide additional functionality, allowing users to set alarms or receive time signals as needed. The auto calendar feature ensures that the date is automatically adjusted, reducing the need for manual adjustments.

The ability to switch between 12-hour and 24-hour time displays caters to personal preferences and cultural conventions, making the watch more versatile and user-friendly.

The ±30 seconds per month accuracy rating ensures that the watch maintains a high level of precision, keeping time within a relatively narrow margin of error.

Overall, this watch offers a range of features and functionalities that make it a practical and reliable timepiece for everyday use, with a focus on convenience, versatility, and precision.

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