Seiko Cal. 6257 - 240

The Seiko 6257-240 represents an important milestone in Seiko's 1989 lineup. Powered by the 6257 caliber with 34j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-9f0d40a3473e]

Also known as: Monster, Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1989

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