Seiko Cal. 5630 - 410

The Seiko 5630-410 represents an important milestone in Seiko's 1981 lineup. With its 18mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-13885d98b1d7]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1981

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