Seiko Cal. 3870 - 287

This Spring Drive model from 1970 features a 34mm PVD Black case. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-d56044cfbcf7]

Also known as: Turtle, Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1970

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