Seiko Cal. 6257 - 381

The Seiko 6257-381 represents an important milestone in Seiko's 1984 lineup. Powered by the 6257 caliber with 32j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-c3337e18f95d]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1984

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