Seiko Cal. 3887 - 966

The Seiko 3887-966 represents an important milestone in Seiko's 1978 lineup. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-56b0e590860e]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1978

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