Seiko Cal. 3893 - 636

The Seiko 3893-636 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-e02fae90bbc8]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

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