The Seiko 8522A is a quartz analog movement introduced in the late 20th century, designed to offer precise timekeeping combined with a date function. Known for its reliability and efficient performance, this caliber was commonly used in Seiko’s everyday watches. The 8522A movement embodies Seiko’s dedication to durable and accurate quartz technology, balancing simplicity and longevity.

Technical Specifications

• Caliber Number: 8522A

• Movement Type: Quartz (Analog)

• Display:

  • Hour, minute, and second hands

  • Date window, usually at the 3 o’clock position

• Accuracy: Approximately ±20 seconds per month

• Battery Type: SR927W (1.55V silver oxide)

• Battery Life: Approximately 2 to 3 years

• Jewels: None (electronic quartz movement)

• Crown Positions:

  • Position 0: Normal operation

  • Position 1: Date adjustment

  • Position 2: Time adjustment

Key Features

Precise Timekeeping

The 8522A uses a quartz oscillator to maintain consistent and accurate time, generally deviating no more than ±20 seconds per month, which is suitable for most daily wear situations.

Date Function

Equipped with a date complication visible through a window, usually positioned at 3 o’clock, the date can be easily set using the crown without disturbing the time.

Battery Efficiency

Powered by an SR927W silver oxide battery, the movement offers efficient power usage and an expected battery life of two to three years.

Operating Instructions

Time Setting

1. Pull the crown to the second click (Position 2).

2. Rotate the crown clockwise or counterclockwise to set the correct time.

3. Push the crown back to Position 0 to restart timekeeping.

Date Setting

1. Pull the crown to the first click (Position 1).

2. Rotate the crown clockwise to change the date.

3. Avoid setting the date manually between 9 PM and 2 AM to prevent damage to the date mechanism.

4. Push the crown back to Position 0 after adjustment.

Battery Replacement and Maintenance

• Replace the battery with an SR927W silver oxide battery as needed.

• Battery life is typically 2 to 3 years, depending on usage and conditions.

• Battery replacement should be performed by professionals to maintain the watch’s water resistance.

• No special reset is required after battery replacement, but time and date should be checked.

Maintenance Recommendations

• The quartz electronic movement requires no mechanical lubrication.

• Avoid exposure to magnetic fields, shocks, and extreme temperatures to protect accuracy.

• Regularly clean the watch case and crystal to maintain its appearance and performance.

• Water-resistant models should be pressure tested periodically.

Watches Featuring the 8522A

The 8522A movement was commonly found in:

• Seiko’s quartz analog watches produced in the 1980s and 1990s.

• Models designed for reliable, everyday timekeeping with date functionality.

• Watches emphasizing simplicity, durability, and ease of use.

Summary Table

Conclusion

The Seiko 8522A is a reliable and precise quartz movement offering simple analog timekeeping complemented by a convenient date display. Its efficient battery consumption, accuracy, and ease of maintenance make it a preferred choice for daily wear watches. The 8522A exemplifies Seiko’s dedication to dependable quartz technology with straightforward, user-friendly features.