Seiko Cal. 6257 - 700

The Seiko 6257-700 represents an important milestone in Seiko's 1975 lineup. Powered by the 6257 caliber with 21j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-dd96352b8d6e]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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