Seiko Cal. 5680 - 931

This Solar model from 1979 features a 44mm Two-Tone case. With its 20mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-1cd9faf3ecf6]

Also known as: Helmet, Navigator

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1979

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