Seiko Cal. 3815 - 221

The Seiko 3815-221 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-91ec7c8669ba]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1977

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