Seiko Cal. 5657 - 370

The Seiko 5657-370 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-1d78080034c3]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1981

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