Seiko Cal. 5661 - 357

The Seiko 5661-357 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-76046cb8f5cd]

Also known as: Bullhead, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1975

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