Seiko 4R36 Vs. Miyota 8215: The Ultimate Budget Movement:

Seiko 4R36 Vs. Miyota 8215: The Ultimate Budget Movement:

When comparing Seiko and Miyota movements, especially within the context of budget-friendly watches, several factors come into play: reliability, precision, availability, and reputation.

Both Seiko and Miyota (a subsidiary of Citizen) are renowned for producing high-quality movements, but they cater to slightly different market needs and preferences.

Here’s a detailed comparison to help determine which might be the "ultimate" budget movement:

Seiko Movements


  1. Heritage and Innovation: Seiko has a long history of watchmaking, with numerous innovations to its name, including the invention of the quartz watch.
  2. In-House Manufacturing: Seiko is known for its vertical integration, producing almost all components in-house, ensuring consistent quality control.
  3. Reliable Automatic Movements: Seiko’s automatic movements, such as the 7S26, 4R36, and NH35A, are known for their durability and reliability. These movements are often found in popular Seiko 5 and other entry-level automatic watches.
  4. Diashock and Magic Lever: Seiko’s movements often feature their proprietary Diashock protection and Magic Lever winding system, enhancing durability and winding efficiency.


  1. Accuracy: While reliable, Seiko movements are often not as precisely regulated out of the box compared to some competitors. The typical accuracy ranges from -20 to +40 seconds per day for many budget models.
  2. Power Reserve: Many Seiko movements have a power reserve of about 41 hours, which is standard but not exceptional.

Miyota Movements


  1. Widespread Use: Miyota movements, particularly the 8000 and 9000 series, are used by many third-party brands, making them one of the most ubiquitous movements in the industry.
  2. Affordable and Dependable: These movements are known for being robust and affordable, providing excellent value for the price.
  3. Higher Beat Rate (9000 Series): The Miyota 9000 series features a higher beat rate (28,800 vibrations per hour), resulting in smoother second-hand movement and improved accuracy compared to many entry-level Seiko movements.
  4. Power Reserve: The Miyota 9000 series offers a power reserve of about 42 hours, slightly better than some Seiko movements.


  1. Perceived Quality: While reliable, Miyota movements are often perceived as less prestigious than Seiko due to their widespread use in microbrand and fashion watches.
  2. Rotor Noise: Some Miyota movements, particularly the 8000 series, are known for their noisy rotors, which can be a drawback for some users.

Seiko 4R36 Vs. Miyota 8215

Direct Comparisons Seiko 4R36 Miyota 8215
Hacking (Second-hand Stops) Yes No
Hand-winding Capabilities Yes Yes
Key Advantages Robust and widely praised for reliability Durable and cost-effective
Criticisms Rotor noise


Direct Comparisons Seiko NH35A Miyota 9015
Beat Rate 21,600 vibrations per hour 28,800 vibrations per hour
Accuracy and Sweep Good reliability Better accuracy and smoother sweep
Hacking (Second-hand Stops) Yes Yes
Hand-winding Capabilities Yes Yes

The Ultimate Budget Movement:

Choosing between Seiko and Miyota largely depends on the specific requirements and preferences of the user.

If you prioritize heritage, in-house manufacturing, and the assurance of a brand with a storied history, Seiko might be the better choice.

Their movements are slightly more prestigious and come with a reputation for durability.

On the other hand, if you are looking for higher accuracy, a smoother sweep, and a slightly better power reserve at a comparable price point, Miyota’s higher-end 9000 series movements are hard to beat.

The widespread adoption of Miyota movements also means that they are tested and proven across many brands and models.

In summary:

  • For robustness and brand prestige: Seiko is the ultimate choice.
  • For precision and smooth operation in the same budget range: Miyota, especially the 9000 series, stands out.
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