Seiko Cal. 3865 - 450

Seiko 3865-450

The 3865-450 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-b3407c4bf789]

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
43mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
20j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1965

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