Seiko Cal. 3887 - 737

The Seiko 3887-737 represents an important milestone in Seiko's 1968 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-16c710a632cc]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1968

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