Seiko Cal. 6257 - 452

This Spring Drive model from 1971 features a 41mm Two-Tone case. Powered by the 6257 caliber with 36j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-36e6a752c3c7]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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