Introduction
Thank you for choosing the INVICTA Activa x Digital ACW1628-002 digital watch. This manual provides detailed instructions on how to set up, operate, and maintain your watch. Please read this manual carefully to ensure proper use and to enjoy all the features of your new timepiece.
Watch Overview and Button Functions
The INVICTA Activa x Digital ACW1628-002 features a clear digital display and multiple functions controlled by four buttons located on the sides of the watch case.

Figure 1: Front view of the INVICTA Activa x Digital ACW1628-002 digital watch. The display shows time, date, and mode indicators. Buttons are labeled 'MODE' (bottom left), 'LIGHT' (top left), 'START' (top right), and 'RESET' (bottom right).
Button Functions:
- MODE (Bottom Left): Cycles through different modes (Time, Chronograph, Alarm, Countdown Timer). Also used to confirm settings.
- LIGHT (Top Left): Activates the backlight for illumination of the display.
- START (Top Right): Used to start/stop functions in Chronograph and Countdown Timer modes. Also used to adjust values during setting.
- RESET (Bottom Right): Used to reset functions in Chronograph and Countdown Timer modes. Also used to adjust values during setting.
Setup and Basic Operation
Setting Time and Date:
- From the normal Time Mode, press the MODE button three times to enter the Time Setting Mode. The seconds digits will begin to flash.
- Press the RESET button to cycle through the setting options: Seconds → Hours → Minutes → Month → Date → Day of Week.
- While a value is flashing, press the START button to increase the value. Hold START to rapidly advance the value.
- Once all settings are adjusted, press the MODE button to return to normal Time Mode.
12/24 Hour Format:
In Time Setting Mode, when the hour digits are flashing, press the LIGHT button to toggle between 12-hour (with AM/PM indicator) and 24-hour formats.
Operating Instructions for Specific Modes
Chronograph (Stopwatch) Mode:
- From Time Mode, press the MODE button once to enter Chronograph Mode. The display will show '00:00:00'.
- Press the START button to begin timing.
- Press the START button again to pause timing.
- Press the RESET button to reset the chronograph to '00:00:00'.
- To record split times, press RESET while the chronograph is running. The split time will be displayed for a few seconds, then the chronograph will continue timing in the background. Press RESET again to return to the running chronograph display.
Alarm Mode:
- From Time Mode, press the MODE button twice to enter Alarm Mode. The alarm time will be displayed.
- Press the RESET button to select the hour or minute digits to set.
- Press the START button to adjust the flashing hour or minute.
- Press the MODE button to exit Alarm Setting Mode.
- To activate/deactivate the alarm, press the START button while in Alarm Mode (without flashing digits). An alarm icon will appear/disappear on the display.
Countdown Timer Mode:
- From Time Mode, press the MODE button four times to enter Countdown Timer Mode.
- Press the RESET button to select the hour or minute digits to set.
- Press the START button to adjust the flashing hour or minute.
- Press the MODE button to exit Timer Setting Mode.
- To start the countdown, press the START button.
- To pause/resume the countdown, press the START button again.
- To reset the timer, press the RESET button while the timer is paused.
Backlight Function:
Press the LIGHT button at any time to illuminate the display for a few seconds, making it easier to read in low-light conditions.

Figure 2: The watch display illuminated by its green backlight.
Maintenance
Cleaning:
Wipe the watch case and strap regularly with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, followed by immediate drying. Avoid using chemical cleaners or abrasive materials.
Water Resistance (5 BAR / 50 Meters):
Your watch is water-resistant to 5 BAR (50 meters). This means it is suitable for everyday use, including showering, hand washing, and short periods of recreational swimming. It is not suitable for diving, snorkeling, or high-impact water sports. Do not operate buttons while the watch is submerged in water.
Battery Replacement:
The watch is powered by a long-lasting electronic quartz 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 a qualified watch technician to ensure proper sealing and maintain water resistance.
Troubleshooting
- Display is blank or dim: The battery may be low or depleted. Consider professional battery replacement.
- Incorrect time/date: Re-enter the Time Setting Mode and adjust the time and date as described in the 'Setting Time and Date' section. Ensure the correct 12/24 hour format is selected.
- Buttons not responding: Ensure the watch is not in a locked mode (if applicable, though this model does not feature a lock). If the issue persists, a soft reset might be needed (consult a professional if unsure).
- Water inside the watch: Immediately take the watch to a professional watch repair service. Do not attempt to open the watch yourself, as this will void the warranty and compromise water resistance.
Specifications
| Model Number | ACW1628-002 |
| Manufacturer | Activa x Invicta |
| Case Material | Plastic |
| Case Diameter | 49 mm |
| Dial Color | Black |
| Movement | Electronic Quartz |
| Water Resistance | 5 BAR (50 meters) |
| Package Dimensions | 11.3 x 9.91 x 9.19 cm |
| Weight | 353.8 grams |
Warranty and Support
Warranty Information:
This INVICTA Activa x Digital ACW1628-002 watch comes with a 2-year warranty from Activa x Invicta. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims. The warranty does not cover damage resulting from improper use, accidents, unauthorized repairs, or normal wear and tear.
Customer Support:
For further assistance, technical support, or warranty service, please contact the official Activa x Invicta customer service. Refer to the product packaging or the official Invicta website for the most current contact information.





