Seiko Cal. 3865 - 537

Seiko 3865-537

The 3865-537 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-1db0e2a5d544]

Also known as: Helmet, Silverwave

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
15.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Black
Jewels
29j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1966

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