Seiko Cal. 5657 - 402

The Seiko 5657-402 represents an important milestone in Seiko's 1970 lineup. Powered by the 5657 caliber with 21j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-74c138d16b83]

Also known as: Bullhead, Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1970

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