Seiko Cal. 3858 - 731

This Spring Drive model from 1977 features a 37mm Two-Tone case. With its 18mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-4114ece1b52d]

Also known as: Rally, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1977

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