Seiko Cal. 5638 - 771

The Seiko 5638-771 represents an important milestone in Seiko's 1969 lineup. It features a Cream dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-a889d5528404]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1969

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