Casio AQ-S820W Watch - Solar Series

The watch uses Tough Solar power, so it charges from sunlight and can last for months on a full charge without additional light exposure.

Yes, the Casio AQ-S820W is water-resistant up to 100 meters, making it suitable for swimming and water activities.

Follow the instructions in the user manual. You'll need to use the buttons to navigate the settings menu and adjust the time and date.

It has a high quality green plastic strap, measuring 21 cm in length and 23 mm in width.

The watch comes with a 2-year warranty.

Yes, the strap is replaceable. You may need to purchase a replacement strap of the correct size.

Yes, it has a light for visibility in the dark.

Check the time zone setting and sync the watch with a reliable time source. Reset the watch if necessary by following the manual instructions.

Ensure the watch is exposed to direct sunlight for extended periods. Check the battery level indicator and allow time for charging.

Check for any button lock settings and disable if necessary. Press the buttons firmly and repeatedly. If the problem persists, consider a factory reset.

Immediately stop using the watch and consult a professional watch repair service.