Vintage 1998's Seiko Quartz Seiko 7N43-0AZ0 100M Analogue St-Steel Silver case Luminous stylish bar index 3 Hands New Battery Metal Private Band Excellent Condition: KQ184 The Seiko 7N43-0AZ0 represents Seiko’s philosophy of producing high-quality, practical watches with refined Japanese design. A solid example of Seiko’s dependable quartz engineering, ideal for collectors who value function-driven Japanese watchmaking. Although your 7N43-0AZ0 is not a true diver, it sits within the evolution of Seiko’s sport watches. First Seiko diver （62MAS） professional underwater use was produced 1965 Birth of quartz divers (7548, 7C43). As everyday sport watches (1990s–2000s)7N43-0AZ0 is created with features from divers of 100M water resistance, Luminous hands/indexes and Screw-back case, but simplified without rotating bezel and slim case for daily wear. This is the model of “civilian diver-inspired watch” with practical, robust and affordable to citizen. Its design is suitable for both business and casual occasions. This model is equipped with the Caliber 7N43, a well-known Seiko quartz movement appreciated for its long-term reliability, stable accuracy, and low maintenance requirements. The luminous bar indexes and three-hand configuration reflect the line’s focus on clarity and functionality. This model represents “Post-quartz revolution Seiko engineering”, “Affordable diver-inspired daily watch” and “Ultra-reliable low-maintenance timekeeper”, so in short this model is best positioned as a durable, everyday vintage Seiko quartz with practical day-date and sport capability, ideal for collectors who appreciate functional history rather than rarity. Features: ■Brand: SEIKO ■Model Number:7N43-0AZ0 ■Product Number:801288: October 1998 Seiko serial numbers are six digits long, with the first two digits indicating the year and month of manufacture. The first number（8）indicates the eighth year of the 1990s, meaning the watch was manufactured in 1998. The next letter （0） is the month code. For Seiko, 1-9 represents January through September, O = October, N = November, and D = December. → "N" is November. Therefore, this watch was manufactured in October 1998 ■Accessories: Body only ■ Technical features of the 7N43 movement: Details of Movement: Seiko caliber 7N43 is an analog quartz watch movement. Seiko’s 7N-series movements were introduced as compact, efficient analog quartz modules used across many of Seiko’s mid-range watches. They target accuracy and battery longevity while providing simple, user-friendly functions (time + date). The 7N43 is essentially the three-hand/date variant in that family and reflects Seiko’s approach in the era of focusing on robust quartz modules for everyday models. Production: 1993 – 2009 • Frequency’s=32768 Hz • Accuracy: ±15 sec/month • Battery: Type SR920SW (371) Life: ~2–3 years • Movement size: Diameter:23.5mm X Thickness2.9mm Very thin → allows slim case (~9–10 mm typical) • Jewels:0 or 1 jewel depending on version Important note: Quartz movements don’t rely on jewels like mechanical ones. Focus is electronics + stepper motor efficiency • Functions （Key Feature）: （A）Weekday Quickset: Crown 1st position- Clockwise （B）Date Quickset: Counterclockwise – Date （C）Time setting: Crown 2nd position - full time adjustment.（D）Automatic calendar rollover: Day/date change at midnight. This is a true dual quickset system — very practical • Case Size:Diameter:39–42 mm diameter X Thickness: 9–10 mm Caseback: screw-back • Water resistance: 100M （10 BAR） • Crystal: mineral glass • Development divisions: Japan) Suwa Seikosha (Nagano) and Tokyo’s Kameido factories were primary quartz production hubs for Seiko at this time, producing reliable analog quartz engines • Maintenance: Battery replacement allows for extended use, but as this is an older model, care should be taken to prevent deterioration of the electronic components. This movement is widely used as Seiko's popular quartz movement and is characterized by its good balance of reliability and ease of maintenance. ■Materials: • Case: Stainless Steel • Case Size:42mm excluding crown X 46mm including case lug Thickness: 9mm • Dial: Luminous Stylish bar indexes and three-hands dial display combined for both legibility and elegance • Secondhand Stop Function: Yes （second hand stops when setting the time） • Weight:137.5gms • Water Resistant 10BAR: resistant for 100meters below sea level and everyday life water dishing/showering but don't expect too much from it: Even if it was labeled "Water Resistant10BAR" at the time, it doesn't meet modern Water-Resistant standards. Avoid using it in deep sea level. • Class 1 antimagnetic watch: Anti Magnetic 60G This watch meets the standard of being able to maintain its performance in most cases even when brought up to 5cm from devices that generate magnetic fields in everyday life （ability to withstand a DC magnetic field of 4800 A/m）. • Crystal: sapphire crystal • Band: Original Seiko Brand Silver Stainless-Steel band with 21cm circumference wrist length measured by tape ■Guide to set day/date/time: • Pull the notch out second position to rotate to change for correct hour minute and second • Pull the notch out first position to turn clockwise for a change of weekday then turn counterclockwise for a change of Date. ■Condition: Overall: The watch is in good pre-owned vintage condition and is currently in working order. There are light scratches and signs of wear on the case consistent with normal use over time. Case: Silver case shows very minor typical surface scratches, micro-scuffs, and signs of wear Dial & Crystal: The dial remains in excellent, clean condition, well preserved with clear printing, good conditioned 3 hands indexes and an attractive pitch-black texture. The crystal shows some minor scratches micro-wear upon close inspection. New Battery replaced April 10th,2026, of this year, and it was functioning normally at the time of listing, so it should continue to function without any issues. Please be sure you are satisfied with the condition before bidding, so please check the photos and product description and ask any questions you may have (please note, however, that we may not be able to answer questions close to the end of the auction)