Seiko Cal. 5634 - 394

The Seiko 5634-394 represents an important milestone in Seiko's 1986 lineup. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-02a978e00458]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1986

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