Seiko Cal. 5256 - 375

The Seiko 5256-375 represents an important milestone in Seiko's 1968 lineup. Powered by the 5256 caliber with 27j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-0b9ea0a11090]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1968

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