Seiko Cal. 4438 - 154

The Seiko 4438-154 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-59658b9de779]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1981

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