Seiko Cal. 3870 - 963

Released in 1970, the Cal. 3870 with design code 963 was part of Seiko's domestic market collection. It features a Cream dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-0fcb837ceb5f]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1970

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