SEIKO 4002-700 Coil 5T52 Coil.

( Brand: Seiko ), ( Manufacturer Part Number: 4002-700 ), ( Type: Watch ), ( Movement Type: Coil ), ( Material: N/a, Brass ), ( Country Of Origin: Switzerland )

Review SEIKO Part 4002700 Coil. New Old Stock

The **Seiko 5 Automatic Chronograph (Model 4002-700, Reference 5T52/4002700)** is a timeless masterpiece from Seiko s legendary **Spring Drive** collection, blending the precision of a mechanical movement with the smooth, near-silent operation of a quartz watch. This extraordinary timepiece represents the pinnacle of Seiko s innovation, combining the brand s iconic craftsmanship with cutting-edge technology to deliver an experience that is both luxurious and functionally unparalleled. At its core lies the **Seiko 4002-700** movement, a **Spring Drive** chronograph calibrated to an astonishing **1/100th of a second**, making it one of the most accurate automatic watches ever produced. The movement operates on a **harmonic oscillator**, a unique mechanism that eliminates the traditional balance wheel and hairspring, replacing them with a **vibrating quartz bar** that oscillates at an ultra-high frequency of **32,768 Hz**, resulting in a **32,768 times per second** timekeeping accuracy far surpassing the precision of conventional mechanical movements. This innovation not only ensures ** 0.5 seconds per day** accuracy but also eliminates the need for regular winding, as the Spring Drive mechanism is powered by a **rotor** that automatically winds the mainspring over time, maintaining the watch s functionality for decades with minimal intervention.

Visually, the **5T52/4002700** exudes an understated elegance that is quintessentially Seiko, with a **stainless steel case** measuring **42.5mm in diameter**, offering a generous yet refined profile that sits comfortably on the wrist. The **sapphire-crystal caseback** reveals the intricate beauty of the **Spring Drive movement**, its silvered components gleaming under the light, while the **unibody case** ensures durability without sacrificing sophistication. The **date window** at the 3 o clock position is complemented by a **chronograph subdial** at the 6 o clock, a **24-hour display** at the 9 o clock, and a **tachymeter bezel** at the 12 o clock, all of which are executed with Seiko s signature precision engineering. The **stainless steel bracelet**, featuring a **two-piece folding clasp**, adds a touch of classic luxury, while the **ceramic insert** at the clasp enhances both aesthetics and functionality. The **black or white dial** options each adorned with **applied hour markers, luminous hands, and a subtle date aperture** ensure that the watch remains both functional and stylish, whether worn in a formal setting or during daily wear.

Beyond its technical brilliance, the **Seiko 5 Automatic Chronograph (4002-700)** is a statement of Seiko s enduring legacy in horology. It carries forward the brand s tradition of **innovation and reliability**, proving that even in an era dominated by digital timekeeping, mechanical watches can achieve levels of accuracy and sophistication once thought impossible. The **Spring Drive** mechanism, while complex, operates with an almost **silent, fluid motion**, devoid of the audible ticks and tocks of traditional chronographs, making it an ideal choice for those who appreciate both performance and discretion. Whether used as a **dress watch, a pilot s chronograph, or a collector s piece**, this timepiece embodies the perfect marriage of **Japanese precision, Swiss-inspired elegance, and timeless design**. For enthusiasts and connoisseurs alike, the **Seiko 5 Automatic Chronograph (5T52/4002700)** is not merely a watch it is a **masterclass in horological engineering**, a testament to Seiko s ability to redefine what a mechanical timepiece can achieve.

The Seiko 5 Automatic (model 5T52, part of the 4002-700 series) is a well-regarded entry-level automatic watch, but like any timepiece, it has advantages and drawbacks. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Seiko 5 Automatic (5T52, 4002-700 Series)**

1. **Affordability** One of the most significant benefits is its price. The Seiko 5 Automatic is a budget-friendly automatic watch, typically priced well below $200 (depending on condition and retailer). This makes it accessible to new watch enthusiasts or those looking for a reliable timepiece without a large investment.

2. **Reliability and Durability** Seiko is known for its robust mechanical movements, and the 4002-700 series features the **Seiko 4R35** (or similar) automatic movement, which is well-regarded for its durability. The watch is built to last, with a stainless steel case and a screw-down crown, making it resistant to minor shocks and water resistance (typically 30 meters).

3. **Good Movement Quality** The automatic movement is smooth and accurate for an entry-level watch. It uses a **hacking seconds** feature (the second hand stops when you wind the crown), which is a nice touch for a watch in this price range. The movement is also known for its longevity, often lasting decades with proper maintenance.

4. **Classic Design** The 5T52 features a timeless, retro-inspired design with a **silver dial, white hour markers, and a date window at the 3 o clock position**. The case is **38mm**, which is a comfortable size for most wrists. The overall aesthetic is clean and versatile, making it suitable for both casual and semi-formal wear.

5. **Easy to Service and Maintain** Because Seiko watches are so common, finding a watchmaker or service center is straightforward. The movement is straightforward to service, and replacement parts (like springs or gears) are widely available. This makes long-term ownership more manageable.

6. **Good Water Resistance** With a **30-meter water resistance**, it can handle light splashes, rain, or even swimming in a pool (though it s not recommended for diving). This is standard for automatic watches in this price range.

7. **Automatic Winding** Unlike quartz watches, the Seiko 5 Automatic winds itself with wrist movement, which can be appealing to those who prefer mechanical watches. While it may require occasional manual winding if not worn regularly, it eliminates the need for battery replacements.

8. **Resale Value** Seiko watches, especially well-maintained ones, hold their value reasonably well. A used 5T52 in good condition can often be resold for a significant portion of its original price.

9. **No Major Common Issues** Unlike some other automatic watches in this price range, the Seiko 5 Automatic is not plagued by widespread reliability issues. The movement is simple enough to avoid common failures seen in more complex or lower-quality watches.

10. **Versatile Dressing** The silver dial and stainless steel case make it a versatile choice. It can be dressed up with a dress shirt and tie or worn casually with jeans and a polo shirt. The lack of a date window (in some models) keeps the design clean, though the 5T52 does include a date function.

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### **Cons of the Seiko 5 Automatic (5T52, 4002-700 Series)**

1. **Limited Water Resistance** While 30 meters is standard for automatic watches in this price range, it is not suitable for swimming in the ocean, diving, or heavy rain without protection. A caseback cover or waterproof strap is recommended for outdoor activities.

2. **Date Mechanism Can Be Fussy** The date window on the 5T52 (and some other Seiko 5 models) can sometimes be tricky to adjust. If the watch is wound too much or the date is changed quickly, it may jump incorrectly. This is a common issue with automatic watches in this price range and requires patience to adjust.

3. **No Date at 6 O Clock (In Some Models)** While the 5T52 does have a date window, some other models in the 4002-700 series (like the 5T51) have the date at the 6 o clock position, which can be less aesthetically pleasing. The 5T52 s date at 3 o clock is generally considered more refined.

4. **Basic Movement Features** The 4R35 movement lacks some advanced features found in higher-end automatic watches, such as a **power reserve indicator, chronograph functions, or a more precise hacking mechanism**. It is a simple, no-frills automatic movement.

5. **Potential for Wear Over Time** Like all mechanical watches, the Seiko 5 Automatic will experience wear over time. The movement may slow down slightly as the mainspring weakens, and the watch may require servicing every **5 7 years** to maintain accuracy. Neglecting maintenance can lead to more serious issues.

6. **Limited Customization** Unlike higher-end Seiko models (e.g., Presage or Prospex), the 5T52 has limited options for customization. The dial, case, and bracelet are fixed, and there are no interchangeable straps or casebacks available.

7. **Not as "Collectible" as Other Seikos** While the Seiko 5 Automatic is a great watch, it is not as highly sought-after as some other Seiko models (e.g., the Seiko 5 Sports, Presage, or Prospex). This means it may not appreciate in value as quickly as more rare or vintage Seikos.

8. **Potential for Cheap Reproductions** Due to its popularity, there are some **counterfeit or low-quality replicas** of the Seiko 5 Automatic sold online. Buyers should ensure they are purchasing from a reputable seller and verify the watch s authenticity (e.g., checking the movement number, caseback engraving, and overall build quality).

9. **No Sapphire Crystal** The watch typically comes with a **mineral glass (sapphire crystal is optional and adds cost)**. While durable, sapphire crystal is more scratch-resistant and provides better visibility in bright light. The standard glass can develop minor scratches over time.

10. **Limited Brand Prestige** While Seiko is a respected brand, the Seiko 5 Automatic is not considered a "luxury" watch. It lacks the prestige of brands like Rolex, Omega, or even higher-end Seiko models. For some buyers, this may not be a major drawback, but it s worth noting if you re looking for a status symbol.

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### **Conclusion**

The Seiko 5 Automatic (5T52, 4002-700 series) is an excellent choice for someone looking for an **affordable, reliable, and stylish automatic watch**. It strikes a balance between quality and cost, offering a smooth movement, a classic design, and durability that far exceeds its price. It is ideal for beginners, casual wearers, or those who appreciate a no-nonsense timepiece without unnecessary complications.

However, it is not without limitations. The **30-meter water resistance, fussy date mechanism, and lack of advanced features** are minor drawbacks for most users. If you prioritize **simplicity, reliability, and value**, this watch is an outstanding purchase. If you re looking for a **luxury watch, high water resistance, or advanced features**, you may want to consider a higher-end Seiko or another brand.

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### **Recommendation**

- You want an **affordable automatic watch** under $200.

- You prefer a **classic, versatile design** that works for both casual and semi-formal occasions.

- You value **reliability and durability** without spending a fortune.

- You re okay with **basic movement features** and don t need advanced functions like a chronograph or power reserve.

- You plan to **maintain the watch properly** (service every 5 7 years).

- You need **high water resistance** (e.g., for swimming or diving).

- You want a **luxury or high-end watch** with more prestige.

- You dislike **fussy date mechanisms** or prefer watches without a date.

- You re looking for **customization options** (e.g., interchangeable straps, casebacks).

- You plan to **wear it daily without maintenance**, as neglect can lead to reliability issues.

**Final Verdict:** The Seiko 5 Automatic is one of the best **value-for-money automatic watches** available. It s a fantastic introduction to mechanical watches and a reliable companion for everyday wear. If you find a well-maintained example (or are willing to service it yourself), it will serve you well for many years. For most buyers, the pros far outweigh the cons, making it a highly recommended purchase.

Details:

I do not test parts unless noted. If you are looking for watch parts, PLEASE let me know I have many parts NEW USED watches brands. Items may require cleaning, adjustment, or servicing. SEIKO 5T52 PART # 4002700 COIL.

part #: 4002700 prices

• $18.39-$29.89

specifications movementparpar:

• brand: Seiko
• mpn: 4002-700
• type: Watch
• movement type: Coil
• material: N/a, Brass
• country of origin: Switzerland

seller movementparpar:

• # reviews: 1715
• rating: 98.7%
• city: Walnut Shade, Missouri

returns movementparpar:

• policy: No Returns

offer movementparpar:

• availability: In Stock
• quantity: 1
• started: February 18, 2026
• options: Ship-to-home
• best offers: True
• sold: 0

general movementparpar:

• condition: New with tags
• Parts, Tools Guides > Parts > Movements

shipping movementparpar:

• service: USPS Ground Advantage
• cost: $6.89
• class: Standard
• transit: 3-9 Days
• carrier: USPS
• type: Fixed

payments movementparpar:

• credit card: Discover
• other
• wallet: Paypal

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