Seiko Cal. 3894 - 907

The Seiko 3894-907 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-34d3903a961d]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

34j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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