Home > The Rack > Seikos in September #13: 1975 Seiko 7006-7120

Seikos in September #13: 1975 Seiko 7006-7120

Timepieces is going back to the Disco Era! Groovy, man!

Our featured Seiko wristwatch for today, Sunday, September 13, 2026, is this highly distinct, groovy, vintage 7006-7120 from February 1975. With a unique, squared-off cushion case design that is 36 mm wide and 41 mm long, this wristwatch has a blocky, geometric architecture that feels larger on the wrist than it actually is.

This groovy disco Seiko features an eye-catching faceted glass crystal that appears gem-like when viewed from different angles. As if by magic, the glass crystal is smooth on the outside but with multiple internal sections, which form a 9-facet prism structure that plays beautifully with the light.

The prismatic illusion created by the faceted crystal is aided by the vibrant gradient blue dial with a dark blue square in the middle. Lume-striped polished baton-style hour and minute hands point to striped polished indices while a day/date window is located at the 3 o’clock position. A 19-jewel Seiko Caliber 7006A powers this self-winding wristwatch.

The good news is this disco-era Japanese timepiece remains relatively affordable, with prices depending on the condition of the case and if the faceted crystal is original and intact. The bad news is, because mid-tier vintage Seiko wristwatches from this era are highly sought after, the 7006-7120 is frequently counterfeited (so-called Mumbai Specials) or heavily modified by over-enthusiastic owners.

As a quick reference, an authentic 7006-7120 like ours shows the precise movement and dial code at the bottom margin instead of a generic text like “Japan Made”.

It is often said that “Imitation is the sincerest form of flattery”. Our 1975 Seiko 7006-7120 vintage automatic watch is often imitated because it perfectly captures the quintessential bold aesthetic of Seiko’s design catalog during the funky Disco Era! Let’s do the hustle! Yeah, baby!

Model: Seiko Automatic

Reference No.: 7006-7120

Month/Year of Manufacture: February 1975

Type: Dress Watch

Movement: Self-Winding/Automatic

Caliber: Seiko 7006A

No. of Jewels: 19

Diameter: 36 mm

Thickness: 12 mm

Lug-to-lug Length: 41 mm

Lug Width: 18 mm

Weight: 81 grams

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