Introduction
Congratulations on your purchase of the Timex M79 Automatic Watch. This timepiece combines classic design with the precision of an automatic mechanical movement. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your watch to ensure its longevity and accurate performance.
Setup
1. Initial Winding
Your Timex M79 is an automatic watch, meaning it is powered by the motion of your wrist. However, for the first use or if the watch has stopped, it requires an initial manual wind to build up a power reserve.
- Gently unscrew the crown (if it's a screw-down crown) or pull it out to the first position.
- Rotate the crown clockwise approximately 8-10 times. This will initiate the movement.
- Push the crown back into its original position and screw it down if applicable.
2. Setting Time and Date
To set the correct time and date:
- Pull the crown out to the second position (farthest from the watch case). The second hand will stop (hacking feature, if available).
- Rotate the crown to set the hour and minute hands. To avoid damaging the movement, it is recommended to set the date when the hour hand is between 3 AM and 9 AM.
- Push the crown back to the first position.
- Rotate the crown to set the date and day. Turn clockwise for date, counter-clockwise for day (this might vary, refer to specific movement details if available).
- Once the date and day are set, pull the crown out to the second position again.
- Advance the time past 12 AM to ensure the date changes correctly for the next day. Set the current time.
- Push the crown back into its original position and screw it down firmly to ensure water resistance.
3. Adjusting the Bracelet
The watch features a unique bracelet style that requires careful adjustment.
- Locate the lower latch on the bracelet.
- Using a small screwdriver or a specialized tool, gently open the wedge on the lower latch.
- Slide the latch along the bracelet to achieve the desired fit.
- Once positioned, securely close the wedge to lock the latch in place. Ensure it is firmly closed to prevent accidental opening.
Image: The Timex M79 Automatic Watch worn on a wrist, showcasing its design and fit.
Operating Your Automatic Watch
Automatic Movement
Your Timex M79 watch is equipped with an automatic mechanical movement. This means it is powered by the natural motion of your wrist. As you wear the watch, an oscillating weight inside winds the mainspring, storing energy.
Power Reserve
When fully wound, the watch has a power reserve of approximately 40 hours. If the watch is not worn for an extended period, it will stop. Simply manually wind it (as described in the "Initial Winding" section) or wear it for several hours to restart the movement and build up the power reserve.
Water Resistance
The Timex M79 watch is water resistant up to 50 meters (5 ATM). This means it is suitable for short periods of recreational swimming, but not for diving or snorkeling. Always ensure the crown is fully pushed in and screwed down (if applicable) before exposing the watch to water. Avoid operating the crown while the watch is wet.
Image: Close-up of the Timex M79 watch face, showing the time, day, and date display.
Maintenance
Cleaning Your Watch
To maintain the appearance of your watch:
- Wipe the case and bracelet with a soft, dry cloth regularly.
- For stainless steel parts, a slightly damp cloth can be used, followed by immediate drying.
- Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the watch's finish.
Storage
When not wearing your watch for extended periods, store it in a cool, dry place away from direct sunlight, extreme temperatures, and strong magnetic fields. A watch box or pouch is ideal for protection.
Service and Inspection
Like all mechanical timepieces, your Timex M79 will benefit from periodic professional servicing to ensure optimal performance and longevity. It is recommended to have your watch inspected by an authorized service center every 3-5 years.
Image: The transparent case back of the Timex M79 watch, revealing the intricate automatic mechanical movement.
Troubleshooting
Watch Not Running
- Insufficient Power Reserve: If the watch has not been worn or manually wound for a while, it may have run out of power. Manually wind the watch as described in the "Initial Winding" section.
- Lack of Movement: Ensure you are wearing the watch regularly. Consistent wrist movement is necessary to keep the automatic movement wound.
Time Inaccuracy
- Automatic Movement Characteristics: Automatic watches are mechanical devices and will not be as precise as quartz watches. A deviation of a few seconds per day is considered normal for mechanical movements.
- Magnetic Fields: Exposure to strong magnetic fields (e.g., from speakers, refrigerators, or certain electronic devices) can affect the watch's accuracy. If you suspect magnetization, consult a professional watchmaker for demagnetization.
- Impact or Damage: A sudden impact or fall can affect the internal components. If accuracy issues persist after checking power reserve and magnetic exposure, professional inspection is recommended.
Date/Day Not Changing
- Ensure the time is set correctly, especially distinguishing between AM and PM. The date/day typically changes around midnight.
- Avoid setting the date/day manually between 9 PM and 3 AM, as this can interfere with the automatic date change mechanism.
Specifications
| Model Name | M79 |
| Model Number | TW2U78300ZV |
| Movement Type | Automatic Mechanical (Miyota 8205) |
| Case Material | Stainless Steel |
| Band Material | Stainless Steel |
| Water Resistance | 50 meters (5 ATM) |
| Dimensions (L x W x H) | 20.32 x 12.7 x 12.7 cm |
| Weight | 108.86 grams |
| First Available Date | May 14, 2021 |
Warranty and Returns
Timex watches are manufactured to high standards and are covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the official Timex website or the warranty card included with your purchase.
Regarding returns, you typically have a 30-day return right for many products, independent of your legal right of withdrawal. For exceptions and conditions, please consult the retailer's return policy where the product was purchased.
Support
If you encounter any issues not covered in this manual or require further assistance, please contact Timex Customer Service. You can find contact information and additional resources on the official Timex website.
Official Timex Website: www.timex.com
