Seiko Cal. 3870 - 566

This Spring Drive model from 1975 features a 42mm Titanium case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-9511d534f54f]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1975

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