Seiko Cal. 6257 - 523

This Solar model from 1966 features a 42mm Hardlex-Coated Steel case. Powered by the 6257 caliber with 21j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-33b3c3e1a9d3]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

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