Seiko Cal. 3866 - 271

This Hand-Winding model from 1977 features a 36mm Two-Tone case. With its 21mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-ff4b634963e3]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1977

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