Seiko Cal. 5657 - 653

The Seiko 5657-653 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-843bdbfddbb2]

Also known as: Monster, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1971

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