Seiko Cal. 3865 - 642

Seiko 3865-642

The Seiko 3865-642 represents an important milestone in Seiko's 1965 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-9a9daa1fef2a]

Also known as: World Timer, Crown

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
13.6mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Navy
Jewels
35j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1965

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