Introduction
This manual provides comprehensive instructions for the Diesel Mega Chief Chronograph Watch, Model DZ4689. This timepiece features a 48mm diameter stainless steel case, a black dial, and a chronograph function. It is designed for accurate timekeeping and includes a date display. Please read these instructions carefully to ensure proper use and maintenance of your watch.

Front view of the Diesel Mega Chief Chronograph Watch, Model DZ4689, showcasing its black dial and stainless steel bracelet.
Components Overview
Familiarize yourself with the main components of your Diesel Mega Chief watch:
- Crown: Located on the right side of the watch case, used for setting time and date.
- Pushers: Two buttons flanking the crown, used to operate the chronograph functions.
- Sub-dials: Three smaller dials on the main watch face, tracking minutes, seconds, and 24-hour time for the chronograph.
- Date Window: Displays the current date.
- Bracelet: Black stainless steel band with a buckle clasp.

Side view of the watch, highlighting the crown and chronograph pushers.
Setup
1. Unboxing and Initial Inspection
Upon receiving your Diesel Mega Chief watch, carefully remove it from its packaging. Inspect the watch for any protective films on the crystal or case back and remove them gently. The watch comes in a distinctive red Diesel box.

The red Diesel watch box in which the watch is packaged.
Video demonstrating the unboxing process and removal of protective films from the watch.
2. Setting Time and Date
- Pull the crown out to the first click position to set the date. Turn the crown clockwise or counter-clockwise until the correct date is displayed.
- Pull the crown out to the second click position to set the time. Turn the crown to move the hour and minute hands to the desired time. Ensure AM/PM is correctly set if your watch has a 24-hour indicator.
- Push the crown back into its normal position to start the watch.
3. Adjusting the Bracelet
The stainless steel bracelet can be adjusted by removing links to achieve a customized fit. It is recommended to have this procedure performed by a professional watchmaker to avoid damage to the bracelet or watch.

Rear view of the watch, showing the stainless steel bracelet and its clasp mechanism.
4. Battery Information
Your watch is powered by a quartz movement and requires one C battery, which is included. The battery is pre-installed and the watch should be running upon arrival. If the watch is not running, please refer to the Troubleshooting section.
Operating the Watch
1. Using the Chronograph Function
The chronograph function allows you to measure elapsed time. It operates independently of the main time display.
- Press the top pusher to start the chronograph. The chronograph second hand will begin to move.
- Press the top pusher again to stop the chronograph. The elapsed time will be indicated by the chronograph hands on the sub-dials.
- Press the bottom pusher to reset the chronograph. All chronograph hands will return to their zero positions.
2. Understanding Sub-dials
- One sub-dial tracks elapsed minutes.
- Another sub-dial tracks elapsed seconds.
- A third sub-dial may indicate tenths of seconds or 24-hour time, depending on the specific dial configuration.
3. Water Resistance Guidelines
Your Diesel Mega Chief watch is water resistant up to 50 meters (165 feet), or 5 ATM. This means it is suitable for short periods of recreational swimming and showering. It is not suitable for diving or snorkeling. To maintain water resistance, ensure the crown is fully pushed in before any contact with water. Avoid operating the pushers or crown while the watch is wet or submerged.
Video showcasing the watch's appearance and handling, which may include operational aspects.
Maintenance and Care
1. Cleaning Your Watch
To clean your watch, wipe the case and bracelet with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, followed by a dry cloth. Avoid using chemical cleaners, as they can damage the watch's finish or seals.
2. Battery Replacement
When the watch battery needs replacement, the second hand may start to move at irregular intervals (e.g., skipping seconds). Battery replacement should be performed by a qualified watch technician to ensure the watch's water resistance is maintained and to prevent damage to the internal components.
3. Water Resistance Care
Regularly check the crown and pushers to ensure they are fully seated against the watch case. Avoid exposing the watch to extreme temperature changes, as this can affect the water resistance seals. If the watch is exposed to saltwater, rinse it gently with fresh water and dry thoroughly.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch not running | Dead battery; crown pulled out | Push crown in fully. If still not running, replace battery. |
| Incorrect time/date | Time/date not set correctly; crown accidentally pulled out | Refer to 'Setting Time and Date' section to reset. |
| Chronograph not resetting to zero | Requires calibration | Consult a professional watch technician for calibration. |
| Condensation inside crystal | Loss of water resistance | Immediately take the watch to a professional watch technician for inspection and repair. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | DZ4689 |
| Case Diameter | 48 Millimeters |
| Case Thickness | 10 Millimeters |
| Band Width | 24 Millimeters |
| Band Length | 205 Millimeters |
| Band Material Type | Stainless Steel |
| Case Material Type | Stainless Steel |
| Crystal Type | Mineral Crystal |
| Watch Movement Type | Quartz |
| Display Type | Analog |
| Water Resistance Depth | 50 Meters (5 ATM) |
| Clasp Type | Buckle |
| Power Source | Battery Powered (1 C battery included) |
| Item Weight | 120 Grams |
Warranty and Support
Warranty Information
Your Diesel Mega Chief Watch comes with a Limited Warranty. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration of coverage. The warranty typically covers manufacturing defects under normal use.
Protection Plans
Extended protection plans may be available for purchase separately. These plans can offer additional coverage beyond the manufacturer's warranty. Examples include:
- 2-Year Protection Plan
- 3-Year Protection Plan
- Complete Protect (monthly renewal)
For details on available protection plans, please consult your retailer or the plan provider.
Customer Support
For further assistance, technical support, or warranty claims, please contact Diesel customer service through their official website or the contact information provided in your watch's packaging. When contacting support, please have your model number (DZ4689) and proof of purchase readily available.