Seiko Cal. 5620 - 778

The Seiko 5620-778 represents an important milestone in Seiko's 1986 lineup. With its 21mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-b7c0e05bec7a]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1986

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