Seiko Cal. 5657 - 320

The Seiko 5657-320 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2361c19d1bf1]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1967

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