Seiko

Seiko Chronograph Slide Rule Calculator

Name: Seiko Chronograph Slide Rule Calculator
Brand: Seiko
SKU: RWS-SE-010
Price: 105000.00 INR
Availability: InStock

Rs. 105,000.00

Sale Sold out

Seiko Chronograph Slide Rule Calculator Ref. 6138-7000 (Circa 1970s)

The Seiko Calculator Slide Rule Chronograph (Ref. 6138-7000) is an exceptional example of 1970s innovation and design, showcasing Seiko's commitment to precision and functionality. This watch combines the robust 6138 automatic movement with a unique bi-directional slide rule bezel, making it both a tool and a statement piece for the wrist. Rare and highly collectible, this model represents Seiko's pioneering spirit during the golden age of chronographs.

Historical Significance

Introduced during the 1970s, the Seiko Calculator Slide Rule Chronograph reflects the brand’s innovation and its ambition to create functional timepieces. The slide rule bezel offered practical utility for pilots and engineers, while the robust 6138 movement solidified Seiko’s reputation for reliability. The model exemplifies Seiko's transition from tool watches to horological icons during a period of global acclaim for the brand.

Key Features

Case: 44mm stainless steel case with rounded cushion shape, sharp edges, and polished finish. The case measures 44mm x 47mm, ensuring a substantial yet comfortable presence on the wrist.
Dial: Original Seiko matte black chronograph dial with contrasting yellow and white hands. Features a quickset day/date display at the 3 o'clock position.
Bezel: Original Seiko stainless steel bi-directional slide rule bezel with black enamel, functioning as an analog calculator. The recreated cursor ring, crafted by Jonathan Koch (Sweadfreak), blends seamlessly with the design.
Crystal: Original Seiko acrylic crystal, well-preserved.
Bracelet: Authentic Seiko stainless steel three-link bracelet with folding deployment clasp, completing the vintage aesthetic.
Movement: Seiko's iconic 6138 automatic chronograph movement with column wheel, featuring a quickset day/date function. Known for its reliability and precision, this is one of Seiko's most celebrated calibres.

Condition

Case: Excellent condition with sharp edges and minimal signs of wear, retaining its original shape.
Dial: Well-preserved with no peeling or damage to the print. The applied SEIKO logo retains its mirror finish, reflecting light beautifully.
Bezel: Minimal wear, retaining its color and functionality. The recreated cursor ring enhances usability while maintaining the watch's vintage charm.
Crystal: Free of significant scratches or blemishes.
Movement: Fully serviced and in optimal working condition.
Bracelet: Excellent condition, with the clasp functioning smoothly.

Measurements

Case Diameter: 44mm (excluding crown)
Case Length (lug-to-lug): 47mm
Lug Width: 19mm

Shipping

Domestic shipping via Delhivery Secure with OTP-verified delivery. Fully insured.

International shipping via FedEx. Shipping and customs charges are borne by the buyer.

All watches are double-boxed and packed securely for transit.

Returns & Warranty

14-day returns accepted if the watch arrives damaged in shipping, is in a different condition than described, photographs do not accurately represent the product, or the watch differs materially from the listing (wrong reference, wrong movement, etc.). Unboxing video is required for all return claims.

Returns not accepted for change of heart or buyer's remorse. Each listing includes 20+ detailed photographs and a thorough condition report. Please review these carefully before purchasing.

6-month service warranty covering movement and timekeeping issues. Does not cover physical damage or water entry. Servicing handled through our partner, Time and Me, Bangalore.

Full details on our Return & Refund Policy page.

Authenticity

Every watch sold by ReWrist is personally inspected and authenticated. We verify dials, movements, cases, and crowns for originality.

All listings include honest, detailed condition notes and photos of the actual watch. What you see is exactly what you receive. No stock images, no surprises.

Vintage watches are pre-owned timepieces with decades of history. They will show signs of age and wear consistent with their era. They are not comparable to modern production watches in cosmetic perfection.

We guarantee timekeeping accuracy of +/- 7 minutes per day for vintage mechanical/automatic movements and +/- 5 minutes per day for vintage quartz movements.