Seiko Cal. 5636 - 820

The 5636-820 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-5968e07975f5]

Also known as: Navigator, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1974

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