Seiko Cal. 4577 - 678

The Seiko 4577-678 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-36c2d62a1e63]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1988

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