Seiko Cal. 5638 - 548

This Hand-Winding model from 1984 features a 42mm Stainless Steel case. With its 19mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-e198047a2e90]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1984

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