Seiko Cal. 3870 - 706

Released in 1974, the Cal. 3870 with design code 706 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-ba79905ba5b7]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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