Introduction
Thank you for choosing a Citizen Tsuyosa Collection automatic analog watch. This manual provides essential information for the proper use, care, and maintenance of your timepiece. Please read these instructions carefully to ensure optimal performance and longevity of your watch. For additional support, please visit the official Citizen website.
Product Overview
The Citizen Tsuyosa Collection NJ0152-51X is an automatic analog watch featuring a stainless steel case and band, a green dial, and a sapphire crystal. It is designed for daily wear with a focus on reliability and classic aesthetics.





Setup
1. Initial Winding
Your Citizen Tsuyosa watch is powered by an automatic mechanical movement. If the watch has stopped, it requires an initial manual wind to start. To do this:
- Ensure the crown is in position 0 (fully pushed in).
- Rotate the crown clockwise approximately 30-40 times. This will build up sufficient power reserve to start the watch.
- Once started, the watch will continue to wind itself through the motion of your arm while worn.
2. Setting the Time and Date
To set the time and date on your watch:
- Pull the crown out to position 2 (the outermost position). The second hand will stop.
- Rotate the crown to set the hour and minute hands. To avoid confusion between AM and PM for the date change, advance the hands past 12 o'clock. If the date changes, you are in the AM hours.
- Push the crown in to position 1 (middle position).
- Rotate the crown to set the date. Turn it until the correct date appears. Avoid setting the date between 9 PM and 3 AM, as this can damage the movement. If the current time falls within this period, first adjust the time outside this window, set the date, then reset the time.
- Pull the crown out to position 2 again.
- Set the exact time. Synchronize with a reliable time source.
- Push the crown back to position 0 (fully pushed in) to start the watch and ensure water resistance.
3. Bracelet Adjustment
The stainless steel bracelet can be adjusted to fit your wrist. This typically involves removing or adding links. It is recommended to have this adjustment performed by a qualified watchmaker or an authorized Citizen service center to prevent damage to the bracelet or clasp.
Operating Instructions
Automatic Movement
Your watch is equipped with an automatic mechanical movement. This means it is powered by the natural motion of your wrist. When worn regularly (approximately 8-10 hours a day), the oscillating weight inside the watch winds the mainspring, providing power. If the watch is not worn for an extended period, the power reserve will deplete, and the watch will stop. Simply manually wind it as described in the "Initial Winding" section or wear it to restart.
Date Display
The watch features a date display at the 3 o'clock position. The date automatically advances once every 24 hours. If the date needs adjustment (e.g., after a month with fewer than 31 days), refer to the "Setting the Time and Date" section.
Water Resistance (5 Bar)
This watch is water resistant to 5 bar (50 meters). This rating means it is suitable for everyday use and can withstand splashes, rain, and brief immersion in water. It is not suitable for swimming, showering, or diving. Always ensure the crown is fully pushed in to maintain water resistance. Avoid operating the crown while the watch is wet.
Maintenance
Cleaning Your Watch
To maintain the appearance of your watch:
- Wipe the case and crystal with a soft, dry cloth regularly.
- For the stainless steel bracelet, use a soft brush and mild soapy water to clean dirt from between the links. Rinse thoroughly with clean water and dry immediately with a soft cloth.
- Avoid using harsh chemicals, solvents, or abrasive cleaning materials.
Environmental Considerations
- Temperature: Avoid exposing your watch to extreme temperatures (above 60°C / 140°F or below 0°C / 32°F) or sudden temperature changes, as this can affect the movement's accuracy and seals.
- Magnetic Fields: Keep your watch away from strong magnetic fields (e.g., speakers, refrigerators, mobile phones, medical devices), as magnetism can affect the accuracy of mechanical watches. If your watch becomes magnetized, it may require demagnetization by a professional.
- Shocks: While robust, avoid severe impacts or shocks to the watch.
Regular Servicing
Like any precision mechanical instrument, your watch benefits from periodic servicing to ensure its long-term accuracy and water resistance. It is recommended to have your watch inspected and serviced by an authorized Citizen service center every 3-5 years.
Troubleshooting
If you encounter issues with your watch, please refer to the following common solutions before contacting customer support.
- Watch has stopped: If the watch has stopped, it likely needs to be wound. Manually wind the watch by rotating the crown clockwise 30-40 times while it is in position 0. Then, wear the watch regularly to maintain its power reserve.
- Inaccurate time:
- Ensure the watch is fully wound and worn consistently.
- Check if the watch has been exposed to strong magnetic fields. If so, it may need demagnetization.
- If accuracy issues persist, the watch may require servicing by an authorized technician.
- Date not changing or changing at incorrect time:
- Ensure the time is set correctly, distinguishing between AM and PM. The date typically changes around midnight.
- Avoid setting the date manually between 9 PM and 3 AM.
- If the issue continues, professional inspection may be necessary.
- Condensation under crystal: This indicates a potential breach in water resistance. Immediately take the watch to an authorized service center to prevent further damage to the movement.
Specifications
| Brand | Citizen |
| Model Number | NJ0152-51X |
| Movement Type | Automatic Mechanical |
| Display Type | Analog |
| Case Material | Stainless Steel |
| Band Material | Stainless Steel |
| Glass Material | Sapphire Crystal |
| Water Resistance | 5 Bar (50 Meters) |
| Product Dimensions | 4.5 x 1.2 x 1.2 cm |
| Item Weight | 138 g |
| Special Features | Automatic Self Wind, Sapphire Crystal, Date Display, Water Resistant |
| Country of Origin | China (Movement: Made in Japan) |
Warranty and Support
Warranty Information
Your Citizen Tsuyosa Collection watch comes with a 2 Years Regional Warranty. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty card included with your watch or visit the official Citizen website.

Customer Support
For service, repairs, or further inquiries, please contact an authorized Citizen service center. You can find contact information and locations on the official Citizen website: www.citizenwatch.com.
Manufacturer: CITIZEN WATCH CO., LTD., 6-1-12 Tanashi-cho, Nishi Tokyo-shi, Tokyo 188-8511, Japan.


