The Casio DB-37H-1AV is a versatile digital watch featuring a multilingual databank, designed for daily use and convenience. It combines classic Casio durability with practical functions, including timekeeping, a databank for storing information, multiple alarms, a stopwatch, and a countdown timer. Its robust resin case and mineral glass protect the watch, while its 50-meter water resistance makes it suitable for various activities.

Figure 1.1: Front view of the Casio DB-37H-1AV Multilingual Databank Watch. This image displays the digital screen with time and date, along with the "MULTI LINGUAL DATA BANK" and "ILLUMINATOR" labels.
Before using your watch, it is important to set the correct time, date, and other basic preferences.
Your watch supports multiple languages for the day of the week display.
The watch features several modes accessible via the MODE button.
This is the default mode, displaying the current time, day of the week, and date. You can switch between 12-hour and 24-hour formats by pressing the 12/24H button.
The databank allows you to store up to 30 sets of names and telephone numbers.
The watch features 5 independent daily alarms and an hourly time signal.
Measure elapsed time with the 1/100-second stopwatch.
Set a countdown from 1 minute up to 24 hours.
Display a second time zone simultaneously.
Press the LIGHT button to illuminate the display for easy viewing in low light conditions. The watch also features an "Auto Light On" function, which can be enabled or disabled by pressing and holding the LIGHT button in Timekeeping Mode.

Figure 3.1: The Casio DB-37H-1AV watch worn on a wrist, demonstrating its size and fit. The image shows the watch's rectangular face and black resin strap.
Proper care will ensure the longevity and optimal performance of your Casio watch.
This watch is water resistant up to 50 meters (165 feet). This means it is suitable for swimming and showering. However, avoid operating buttons while the watch is submerged in water to prevent water ingress.
Wipe the watch regularly with a soft, dry cloth to remove dirt and moisture. For stubborn grime, a slightly damp cloth can be used, followed by drying. Avoid using chemical cleaners or solvents.
The watch is powered by a long-life lithium-ion battery. When the display becomes dim or functions become erratic, it may be time for a battery replacement. It is recommended to have the battery replaced by an authorized service center to ensure proper sealing and water resistance.
If you encounter issues with your watch, refer to the following common problems and solutions.
| Feature | Detail |
|---|---|
| Brand | Casio |
| Model Number | DB-37H-1AVCF |
| Movement | Quartz |
| Case Material | Resin |
| Dial Color | Gray |
| Case Diameter | 32 mm |
| Crystal Material | Mineral Glass |
| Water Resistance | 50 meters (165 feet) |
| Functions | Time, Date, Day-of-week, Databank, 5 Alarms, Stopwatch, Countdown Timer, Dual Time, Illuminator |
| Battery Type | 1 Lithium Ion |
| Package Dimensions | 15.49 x 8.64 x 5.59 cm |
| Item Weight | 113.4 g |

Figure 6.1: The Casio DB-37H-1AV watch packaging box and a clear display stand. The box is blue and white with the Casio logo.
Your Casio watch is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase for specific terms and conditions, including the warranty period and coverage details.
For technical support, service, or inquiries regarding your watch, please visit the official Casio website or contact their customer service department. Contact information can typically be found on the Casio website or in the documentation provided with your watch.
For more information, you may visit the Casio Brand Store on Amazon.