Seiko Cal. 3881 - 977

The Seiko 3881-977 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-90b76979e16a]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1971

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