Seiko Cal. 0770 - 391

The Seiko 0770-391 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-dd6d2556214a]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1979

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