Introduction
Thank you for choosing the Akribos XXIV Conqueror Chronograph Watch, model AK639. This manual provides detailed instructions for the proper setup, operation, and maintenance of your timepiece. Please read this manual carefully to ensure optimal performance and longevity of your watch.
Product Overview
The Akribos XXIV Conqueror Chronograph Watch AK639 is a sophisticated timepiece featuring a precise quartz chronograph movement. It includes three functional sub-dials for tracking seconds, minutes, and 24-hour time, along with a date window. The watch is constructed with a durable stainless steel bracelet and a sapphire-coated crystal for enhanced scratch resistance.

Image: Front view of the Akribos XXIV Conqueror Chronograph Watch AK639, showcasing its textured dial, sub-dials, and two-tone stainless steel bracelet.
Setup
Setting the Time
- Pull the crown out to position 2.
- Rotate the crown clockwise or counter-clockwise to set the hour and minute hands to the desired time.
- Push the crown back into position 0 to start the watch.
Setting the Date
- Pull the crown out to position 1.
- Rotate the crown clockwise to advance the date.
- Once the correct date is displayed, push the crown back into position 0.
Using the Chronograph
The chronograph function allows for precise timing of events. Your watch features two pushers located at the 2 o'clock and 4 o'clock positions.
- Start/Stop: Press the pusher at the 2 o'clock position to start the chronograph. Press it again to stop the chronograph.
- Reset: While the chronograph is stopped, press the pusher at the 4 o'clock position to reset all chronograph hands to their zero positions.

Image: Side view of the watch, illustrating the crown and chronograph pushers for time and date adjustment, and chronograph control.
Operating the Chronograph Sub-dials
Your watch features three sub-dials that work in conjunction with the chronograph function:
- 60-Second Sub-dial: Tracks elapsed seconds when the chronograph is active.
- 60-Minute Sub-dial: Tracks elapsed minutes when the chronograph is active.
- 24-Hour Sub-dial: Displays the current time in a 24-hour format, synchronized with the main time display.
Maintenance
Water Resistance
This watch is water resistant up to 10 ATM (100 meters / 300 feet). This means it is suitable for swimming and snorkeling. However, it is important to:
- Do not operate the crown or pushers while the watch is wet or submerged in water.
- Ensure the crown is fully pushed in before exposing the watch to water.
- Avoid exposing the watch to hot water or steam, as this can compromise the water seals.
Cleaning
To maintain the appearance of your watch, wipe the case and bracelet with a soft, dry cloth. For stainless steel bracelets, a slightly damp cloth can be used, followed by a dry cloth. Avoid using harsh chemicals or abrasive materials.
Battery Replacement
Your quartz watch is powered by a battery. When the watch stops or the second hand begins to jump erratically, it indicates a low battery. Battery replacement should be performed by a qualified watch technician to ensure proper sealing and function.
Troubleshooting
- Watch not running: Check if the crown is fully pushed into position 0. If the watch still does not run, the battery may need replacement.
- Incorrect time/date: Refer to the 'Setting the Time' and 'Setting the Date' sections to correctly adjust.
- Chronograph hands not resetting to zero: This may indicate a need for chronograph hand calibration, which typically requires professional service.
Specifications
| Model Number | AK639 |
| Movement | Precise Quartz Chronograph |
| Case Material | Stainless Steel |
| Bracelet Material | Stainless Steel |
| Crystal | Sapphire Coated Mineral |
| Water Resistance | 10 ATM (100 meters / 300 feet) |
| Clasp Type | Foldover Clasp |
| Department | Men's |

Image: Rear view of the watch, displaying the engraved case back with model number and water resistance rating.
Warranty and Support
Your Akribos XXIV Conqueror Chronograph Watch AK639 is backed by a 2-Year Warranty. This warranty covers manufacturing defects under normal use. For warranty claims or technical support, please refer to the contact information provided with your purchase documentation or visit the official Akribos XXIV website.
Please retain your proof of purchase for warranty validation.