1. Introduction
Thank you for choosing the Diesel Mega Chief DZ4648 Ana-Digi Watch. This manual provides essential information for the proper setup, operation, and maintenance of your timepiece. Please read it carefully to ensure optimal performance and longevity of your watch.

Figure 1.1: Front view of the Diesel Mega Chief DZ4648 Ana-Digi watch. This image displays the watch's prominent silver chrome case and bracelet, along with its unique dial featuring both traditional analog hands and digital readouts for time, date, and day of the week.
2. Watch Components
Familiarize yourself with the key components of your Diesel Mega Chief watch:
- Crown: Used for setting analog time.
- Pushers (Buttons): Used for operating digital functions such as chronograph, alarm, and digital time/date settings.
- Analog Display: Traditional hour, minute, and second hands.
- Digital Display: Shows digital time, date, day of the week, and other functions.
- Stainless Steel Case & Bracelet: Provides durability and a distinctive aesthetic.

Figure 2.1: Side view of the watch. This image highlights the watch's robust case profile and the placement of the main crown and two pushers, which are used to control various watch functions.
3. Setup and Initial Configuration
3.1 Setting Analog Time
- Pull the crown out to the first position.
- Turn the crown to adjust the hour and minute hands to the correct time.
- Push the crown back into its normal position to start the analog movement.
3.2 Setting Digital Time and Date
The digital display offers various modes. Refer to the specific instructions below to navigate and set them:
- Press the top-right pusher to cycle through modes (Time, Date, Alarm, Chronograph).
- When in the desired setting mode (e.g., Digital Time), press and hold the bottom-right pusher until the digits begin to flash.
- Use the top-right pusher to adjust the flashing digits (hours, minutes, year, month, day).
- Press the bottom-right pusher again to move to the next setting field.
- Once all settings are complete, press the bottom-right pusher to exit the setting mode.
3.3 Bracelet Adjustment
The stainless steel bracelet can be adjusted for a comfortable fit. It is recommended to have this procedure performed by a qualified jeweler or watch technician to prevent damage to the bracelet or clasp.

Figure 3.1: The Diesel Mega Chief DZ4648 watch worn on a wrist. This image provides a visual reference for the watch's 51MM case size and how it appears when worn.
4. Operating Your Watch
4.1 Chronograph Function
Your watch features a chronograph (stopwatch) function:
- Navigate to the chronograph mode using the top-right pusher.
- Press the top-right pusher to start the chronograph.
- Press the top-right pusher again to pause the chronograph.
- Press the bottom-right pusher to reset the chronograph to zero.
4.2 Alarm Function
To set and activate the alarm:
- Navigate to the alarm mode using the top-right pusher.
- Press and hold the bottom-right pusher until the alarm time digits flash.
- Use the top-right pusher to adjust the alarm hour and minute.
- Press the bottom-right pusher to confirm and exit setting mode.
- To activate/deactivate the alarm, press the top-right pusher briefly while in alarm mode. An alarm icon will indicate activation.
4.3 Water Resistance
Your watch is water resistant to 10 ATM (100 meters / 330 feet). This means it is suitable for everyday use, including splashes, rain, and showering. It is generally suitable for swimming and snorkeling, but not for high-impact water sports or diving. Always ensure the crown is fully pushed in before any contact with water.
5. Maintenance and Care
5.1 Cleaning
To maintain the appearance of your watch:
- Wipe the case and bracelet with a soft, damp cloth.
- For stainless steel, a mild soap solution can be used, followed by thorough rinsing and drying.
- Avoid harsh chemicals or abrasive materials.
5.2 Battery Replacement
Your watch is powered by a quartz movement and requires one product-specific battery (included). When the battery runs low, the watch may stop or the digital display may dim. Battery replacement should be performed by a professional watch technician to ensure proper sealing and water resistance.
5.3 Storage
When not in use, store your watch in a cool, dry place, away from direct sunlight and extreme temperatures. The original packaging box can be used for storage.

Figure 5.1: The Diesel watch packaging box. This red box is designed to protect your watch during storage and transport.
6. Troubleshooting
If you encounter issues with your watch, refer to the following common troubleshooting steps:
- Watch Not Running: Check if the crown is fully pushed in. If the watch still does not run, the battery may need replacement.
- Incorrect Time/Date: Follow the instructions in Section 3.1 and 3.2 to reset the analog and digital time/date.
- Digital Display Issues: If the digital display is blank or erratic, the battery may be low, or a reset might be needed. Consult a professional.
- Water Ingress: If moisture appears inside the watch, immediately take it to an authorized service center. Do not attempt to open the watch yourself.
7. Specifications
| Model Number | DZ4648 |
| Case Diameter | 51MM |
| Movement | Quartz (Analog & Digital) |
| Water Resistance | 10 ATM (100 meters / 330 feet) |
| Case Material | Stainless Steel |
| Band Material | Stainless Steel |
| Product Dimensions | 2.01 x 1.02 x 0.55 inches |
| Item Weight | 1.06 ounces |
| Battery | 1 Product Specific battery (included) |

Figure 7.1: Watch size comparison chart. This image illustrates different watch case sizes on a wrist, providing a visual reference for the 51MM size of the Mega Chief DZ4648.
8. Warranty and Support
8.1 Manufacturer's Warranty
Your Diesel watch is covered by a manufacturer's warranty against defects in materials and workmanship under normal use. The duration and terms of the warranty may vary by region. Please refer to the warranty card included with your purchase or visit the official Diesel website for detailed information.
8.2 Customer Support
For technical assistance, service, or warranty claims, please contact Diesel customer support or an authorized service center. Contact information can typically be found on the official Diesel website or in the documentation provided with your watch.





