Seiko Cal. 3899 - 878

The Seiko 3899-878 represents an important milestone in Seiko's 1989 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-5fa3865d9fa0]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1989

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