Seiko Cal. 6157 - 347

This Spring Drive model from 1980 features a 44mm Two-Tone case. Powered by the 6157 caliber with 26j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-bdd89ec10de9]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1980

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