Seiko Cal. 3870 - 528

The Seiko 3870-528 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-98fc4d0f3a6a]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1979

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