CITIZEN 6100A Nos Daydate Movement Keeps Hrs Movement. Hrs.

( Brand: Citizen ), ( Manufacturer Part Number: 6100A ), ( Type: Movement ), ( Movement Type: Quartz ), ( Material: Steel ), ( Country Of Origin: Japan )

Review CITIZEN Nos Daydate Movement. Sets And Runs Keeps Time Hrs. Tested

The **Citizen Eco-Drive 6100A NOS (New Old Stock) Day-Date movement** represents a refined fusion of timeless elegance and cutting-edge technology, embodying Citizen s legacy of precision engineering while embracing the future of self-sustaining timekeeping. This meticulously preserved NOS movement, sourced from a carefully curated selection of pre-owned yet fully functional components, retains the unmistakable character of a piece that has stood the test of time its polished brass plates gleaming with a subtle patina, a testament to decades of craftsmanship. At its core, the Eco-Drive technology eliminates the need for traditional battery replacements, harnessing ambient light to power the movement indefinitely, making it an eco-conscious yet enduring choice for discerning collectors and enthusiasts alike. The Day-Date complication elevates functionality to an art form, with a smooth-sweeping minute hand, a sweeping second hand, and a precise date window that seamlessly transitions between months, complete with a subtle correction mechanism for February s leap years. The movement s 24-hour format, often favored by aviation professionals and those who appreciate a minimalist yet sophisticated aesthetic, ensures clarity and simplicity without sacrificing sophistication. Encased in a robust yet lightweight structure, the 6100A movement features a high-precision quartz oscillator, delivering an accuracy of 10 seconds per month a level of reliability that has made Citizen a trusted name in horology for generations. Whether nestled within a classic dress watch or a modern minimalist case, this NOS movement breathes life into timepieces with unparalleled grace, offering both the nostalgia of a bygone era and the innovation of a self-sustaining future. For those who appreciate the marriage of heritage and modernity, the Citizen 6100A NOS Day-Date movement is a masterpiece of quiet functionality, where every tick and tock tells a story of enduring precision.

### **Pros and Cons of Buying a Citizen Eco-Drive 6100A NOS (New Old Stock) with a Day-Date Movement**

#### **Pros**

1. **High-Quality Movement** The Citizen Eco-Drive 6100A is a reliable, self-winding movement that does not require battery changes, making it low-maintenance. The NOS condition ensures it is pre-owned but in excellent working order, often with minimal wear.

2. **Day-Date Functionality** The day-date complication adds a premium touch, making it suitable for formal or dress occasions. This feature is less common in basic Eco-Drive models, adding value.

3. **Eco-Drive Technology** Unlike traditional quartz movements, the Eco-Drive runs on ambient light, eliminating the need for battery replacements. This makes it ideal for those who dislike frequent maintenance.

4. **Brand Reputation** Citizen is known for durability, affordability, and good resale value. Their Eco-Drive line is particularly well-regarded for reliability.

5. **Potential Cost Savings** NOS watches are often priced lower than new models, allowing buyers to acquire a high-quality timepiece at a reduced cost.

6. **Minimal Wear (NOS Condition)** Since it is new old stock, the watch should have very little to no cosmetic wear, meaning the case, bracelet, and crystal are likely in near-perfect condition.

7. **Versatility** The 6100A is available in various case sizes and styles, making it adaptable for different wrist sizes and preferences.

#### **Cons**

1. **Limited Customization** NOS watches come as-is, meaning you cannot modify the bracelet, caseback, or other components without additional cost.

2. **Potential for Hidden Issues** Even in NOS condition, there is a slight risk of minor wear inside the case (e.g., slight scratches on the caseback or bracelet) or minor movement adjustments needed after purchase.

3. **No Warranty** Since it is pre-owned, the original manufacturer warranty is likely void. Any post-purchase issues would require third-party repair services.

4. **Resale Value Depends on Condition** While NOS is desirable, if the watch is not well-maintained over time, its resale value may not hold as well as a new model.

5. **Availability of Parts** If the watch requires servicing in the future, finding compatible parts for an older NOS model may be slightly more challenging than for newer Citizen models.

6. **Potential for Overpaying** Some NOS listings may be priced higher than fair market value, especially if the seller is unaware of the watch s true condition or demand.

7. **No Guarantee of Perfect Accuracy** While Eco-Drive movements are generally accurate, slight variations in timekeeping can occur over time, especially if the watch has not been recently serviced.

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### **Conclusion**

The Citizen Eco-Drive 6100A NOS with a day-date movement is an excellent choice for those seeking a reliable, low-maintenance watch with a premium complication at a potentially lower cost than a new model. Its self-winding nature, durability, and Citizen s strong brand reputation make it a practical and stylish option. However, buyers should be mindful of the lack of warranty, potential minor wear, and the need for careful inspection before purchase.

For someone who values functionality, longevity, and a touch of elegance without the high cost of luxury brands, this watch is a strong recommendation. If budget allows, a new 6100A model may offer added peace of mind with a warranty, but the NOS version remains a compelling alternative for those who prioritize value and quality.

If you are confident in the watch s condition (verified through professional inspection or trusted seller), the Citizen Eco-Drive 6100A NOS day-date is an excellent purchase offering a balance of quality, reliability, and affordability. Ensure you test the movement, check for any cosmetic flaws, and consider having it serviced upon purchase to maximize its lifespan.

Details:

Tested Quickest and Normal Date Functioning Precisely. NOS Citizen 6100A DayDate 3 Movement. Sets Runs, Keeps Time 24 Hrs. Movements are All Cleaned and Tested, Even NOS.

part #: 6100a prices

• $59.89-$126.28

specifications movementparpar:

• brand: Citizen
• mpn: 6100a
• type: Movement
• movement type: Quartz
• material: Steel
• country of origin: Japan

offer movementparpar:

• options: Ship-to-home
• sold: 0
• started: February 20, 2026
• availability: In Stock
• best offers: True
• quantity: 1

returns movementparpar:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days
• method: Money back

payments movementparpar:

• other
• wallet: Apple-pay
• credit card: Visa

general movementparpar:

• condition: New without tags
• Parts, Tools Guides > Parts > Movements

shipping movementparpar:

• service: USPS Ground Advantage
• cost: $5.00
• transit: 5-11 Days
• class: Standard
• type: Fixed
• carrier: USPS

seller movementparpar:

• rating: 99.0%
• city: Andover, New Jersey
• # reviews: 723

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