Seiko Cal. 4431 - 869

This Solar model from 1980 features a 40mm Titanium case. Powered by the 4431 caliber with 22j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-3ef2679d2303]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1980

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