Seiko Cal. 3815 - 620

The Seiko 3815-620 represents an important milestone in Seiko's 1970 lineup. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-6e51a4bdbfe3]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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