Seiko Cal. 3817 - 635

Seiko 3817-635

The 3817-635 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-d74ee714849f]

Also known as: Panda, Helmet

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
11.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Black
Jewels
27j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1986

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