Seiko Cal. 3897 - 977

The Seiko 3897-977 represents an important milestone in Seiko's 1976 lineup. With its 18mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-f56517c03a96]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1976

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