Seiko Cal. 5231 - 757

This Solar model from 1976 features a 37mm PVD Black case. Powered by the 5231 caliber with 21j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-837d0e8921c8]

Also known as: Samurai

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1976

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