Seiko Cal. 3870 - 902

The Seiko 3870-902 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-43f6ac1989ec]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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