Seiko Cal. 5681 - 664

The Seiko 5681-664 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0ce0ca9abcee]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1971

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