Seiko S-Wave, Ref. 7S26-0120, Cal. 7S26, Men’s Automatic Watch

Vintage Seiko S-Wave Dress Vintage Watch from 1998 featuring a striking blue dial with white Arabic numerals, Men’s automatic Cal. 7S26 movement and day-date complication, fully serviced and ready for sale.

Seiko S-Wave 1998 — First impression - 7S26-0120

The Seiko S-Wave Ref. 7S26-0120 from 1998 embodies the distinctive Japanese horology heritage of the late 20th century. Its cushion-shaped stainless steel case and deep blue dial create a captivating aesthetic, while the reliable automatic Cal. 7S26 movement offers robust everyday performance. Designed for durability with 100m water resistance, this model balances sporty functionality with refined styling, making it equally suitable for casual wear or a vintage watch collection.

Seiko S-Wave - Blue Arabic Numeral Dial

The dial presents a vivid blue finish accented by white Arabic numerals at the 12, 3, 6, and 9 o’clock positions. A precise white minute track surrounds the dial, while luminous-filled hour and minute hands ensure legibility in low light. The Seiko logo, finished in gold, adds an elegant contrast to the vibrant background.

S-Wave 7S26-0120 - Hands

The hands feature a bold design with luminous filling for enhanced visibility. A red central seconds hand introduces a dynamic accent, complementing the sporty undertone of the watch without compromising its dress-oriented appeal.

Seiko S-Wave 7S26-0120 - Cushion Stainless Steel Case

The stainless steel case, with its cushion profile and integrated lugs, measures 38mm in diameter. Its brushed top surfaces contrast with polished case flanks, highlighting Seiko’s attention to finishing detail. The screw-down caseback reinforces the 100m water resistance rating.

S-Wave 7S26-0120 - Crown

The original unsigned Seiko crown is positioned at 4 o’clock, recessed into the case to prevent accidental adjustments and maintain the watch’s streamlined silhouette.

Seiko S-Wave Stainless Steel Bracelet

The watch comes fitted with its original stainless steel bracelet, combining polished center links with brushed outer links. The secure folding clasp ensures comfort and safety during wear.

Movement and Performance

At the heart of this model lies the Seiko automatic Cal. 7S26 movement, a durable workhorse known for its longevity and low maintenance requirements. Operating at 21,600 vibrations per hour, it provides smooth timekeeping and supports both day and date complications, with Japanese engineering ensuring consistent accuracy.

Heritage of the Seiko S-Wave in the 1990s

The S-Wave series emerged in the late 1990s as part of Seiko’s effort to blend contemporary sports styling with dependable mechanical engineering. Its bold dial colors, integrated bracelet design, and high water resistance reflect the brand’s innovative approach to versatile timepieces during this era.

Seiko S-Wave — 12 Months Warranty, Shipping Worldwide

This Seiko S-Wave is fully serviced, fully operational, and composed of all original components. Backed by a 12-month warranty and available for worldwide shipping, it offers collectors and enthusiasts an opportunity to own a distinctive vintage Seiko that combines style, durability, and heritage.

Explore more from our Seiko vintage watch collection, including unique 1990s designs or discover our automatic vintage watches with classic calibers for your collection.