Seiko Cal. 5631 - 827

This Solar model from 1973 features a 42mm Two-Tone case. Powered by the 5631 caliber with 18j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-56e95a30e668]

Also known as: Arnie, Flighty

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1973

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