Seiko Cal. 6256 - 427

The Seiko 6256-427 represents an important milestone in Seiko's 1975 lineup. Powered by the 6256 caliber with 17j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-683d666647b7]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

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