1. Introduction
This manual provides detailed instructions for the proper use and care of your Casio Women's Vintage LA11WB-1 Digital Sport Watch. Designed for durability and functionality, this water-resistant timepiece offers essential features in a compact design.

Figure 1: Front view of the Casio LA11WB-1 watch.
2. Key Features
- Digital display with time, date, and day of the week.
- Alarm function for daily reminders.
- Stopwatch for timing events.
- Pre-set countdown timers (1, 3, 5, 10, 15, 20, 30 minutes).
- Water resistance suitable for daily use and light water activities.
- Durable resin case and band.
- Mineral dial window for scratch resistance.
3. Setup
3.1 Setting the Time and Date
- In normal timekeeping mode, press the MODE button (bottom left) repeatedly until the time setting screen appears (usually indicated by flashing digits).
- Use the START/STOP button (bottom right) to adjust the flashing digits (hours, minutes, year, month, day).
- Press the TIMER button (top right) to move between the different settings (e.g., from hours to minutes).
- Once all settings are correct, press the MODE button to return to normal timekeeping.
3.2 Setting the Alarm
- From normal timekeeping mode, press the MODE button until the alarm mode is displayed (often indicated by "AL" or a bell icon).
- Use the START/STOP button to adjust the hour, and the TIMER button to switch to minutes.
- Press MODE to confirm and exit alarm setting.
- To activate/deactivate the alarm, press the START/STOP button while in alarm mode.
4. Operating Instructions
4.1 Timekeeping Mode
The watch displays the current time, including hours, minutes, and seconds. The day of the week and date are also visible.
4.2 Stopwatch Function
- Press the MODE button until the stopwatch mode is displayed (often indicated by "ST" or "STOP").
- Press START/STOP to start and stop the stopwatch.
- Press the TIMER button to reset the stopwatch to zero.
4.3 Countdown Timer
The watch features convenient pre-set countdown timers. These are indicated by numbers (30, 20, 15, 10, 5, 3, 1) above the digital display.
- In normal timekeeping mode, press the TIMER button (top right) repeatedly to cycle through the pre-set countdown durations. The selected duration will be highlighted or indicated on the display.
- Once a duration is selected, the countdown will begin automatically.
- An audible alert will sound when the countdown reaches zero.
Video: Overview of the Casio Women's LA11WB-1 Sport Watch, demonstrating its compact size and basic functions.
5. Maintenance
5.1 Water Resistance
This watch is water resistant. It is suitable for everyday use, such as hand washing, rain, and splashes. It is generally suitable for short periods of recreational swimming, but not for diving or snorkeling. Avoid operating buttons while the watch is wet or submerged.
5.2 Cleaning
Wipe the watch with a soft, dry cloth. For stubborn dirt, use a soft cloth dampened with water and a mild soap, then wipe dry. Avoid using chemical cleaners or solvents.
5.3 Battery Replacement
The watch uses a long-lasting battery. When the display becomes dim or functions become erratic, it is time to replace the battery. Battery replacement should be performed by a qualified watch technician to ensure water resistance is maintained.

Figure 2: Back view of the Casio LA11WB-1 watch.
6. Troubleshooting
6.1 Incorrect Time Display
If the time is incorrect, refer to Section 3.1 "Setting the Time and Date" to adjust it. Ensure the correct AM/PM setting is selected if using 12-hour format.
6.2 No Display or Dim Display
A blank or dim display usually indicates a low battery. Replace the battery as soon as possible. If the issue persists after battery replacement, contact customer support.
6.3 Buttons Not Responding
Ensure the watch is not wet when operating buttons. If buttons remain unresponsive, a reset may be required. Consult the full Casio manual for specific reset procedures or contact customer support.
7. Specifications
| Brand Name | Casio |
| Model Name | LA-11WB-1 |
| Part Number | LA11WB-1 |
| Item Dimensions (LxWxH) | 1.22 x 0.31 x 1.02 inches |
| Material | Resin |
| Color | Black |
| Water Resistance Depth | 30 Meters |
| Movement | Quartz |
| Display Type | Digital |
| Country of Origin | China |
8. Warranty & Support
For warranty information, product registration, or technical support, please refer to the official Casio website or contact Casio customer service directly. Keep your proof of purchase for any warranty claims.
You can find more information and support by visiting the official Casio Store.