Seiko Cal. 3820 - 156

The Seiko 3820-156 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-192c9351979f]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1965

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