The Seiko 8522A is a reliable and precise quartz analog movement designed for everyday wristwatches requiring accurate timekeeping and a practical date function. Introduced in the late 20th century, the 8522A reflects Seiko’s commitment to producing robust, low-maintenance movements that balance functionality with durability. This caliber is widely used in Seiko’s quartz watch range, offering users consistent performance with minimal upkeep.

Technical Specifications

• Caliber Number: 8522A

• Movement Type: Quartz (Analog)

• Display:

  • Hours, minutes, seconds hands

  • Date window, usually at 3 o’clock

• 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 running

  • Position 1: Date adjustment

  • Position 2: Time adjustment

Key Features

Consistent Timekeeping

Powered by a quartz oscillator, the 8522A maintains accurate time, with a typical deviation of ±20 seconds per month. This level of precision meets the demands of everyday wear.

Date Display

A date complication is integrated into the movement and displayed through a window, typically at 3 o’clock, offering quick and easy date reading.

Battery Efficiency

Utilizing an SR927W silver oxide battery, the 8522A provides an efficient power consumption rate, enabling a battery lifespan of 2 to 3 years.

Operating Instructions

Setting the Time

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

2. Rotate the crown to adjust the hour and minute hands to the desired time.

3. Push the crown back to Position 0 to resume normal operation.

Setting the Date

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

2. Rotate the crown clockwise to advance the date to the correct day.

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

4. Return the crown to Position 0 after adjustment.

Battery Replacement and Maintenance

• The movement requires an SR927W silver oxide battery.

• Battery life typically lasts between 2 to 3 years.

• Battery replacement is recommended to be performed by a qualified technician to preserve water resistance and ensure correct installation.

• No additional reset is usually necessary after battery replacement, but time and date should be re-checked.

Maintenance Recommendations

• No mechanical lubrication is needed due to its fully electronic design.

• Avoid exposure to magnetic fields, shocks, and extreme temperature fluctuations to maintain accuracy and longevity.

• Clean the watch regularly to preserve its appearance and functionality.

• Water-resistant watches should undergo pressure testing to ensure sealing integrity.

Watches Using the 8522A

The 8522A has been featured in a variety of Seiko quartz watches, including:

• Everyday analog quartz watches produced primarily during the 1980s and 1990s.

• Models focused on providing reliable, simple timekeeping with a date function.

• Watches with classic, clean dial designs intended for broad consumer appeal.

Summary Table

Conclusion

The Seiko 8522A quartz movement combines accuracy, reliability, and ease of use in a straightforward analog package. Its practical date function, long battery life, and robust design make it an excellent choice for everyday watches. This caliber exemplifies Seiko’s dedication to producing durable quartz movements that deliver consistent performance with minimal maintenance, ensuring dependable service for years.