Seiko Cal. 3865 - 638

The Seiko 3865-638 represents an important milestone in Seiko's 1988 lineup. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-bcb45b67dc7b]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1988

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