Seiko Cal. 3880 - 678

This Hand-Winding model from 1966 features a 35mm Two-Tone case. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-e4d2d7541f20]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1966

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