Seiko Cal. 5664 - 437

The Seiko 5664-437 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-d0e0c91e554c]

Also known as: Shogun, Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

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