Seiko Cal. 6636 - 552

The Seiko 6636-552 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-440b6e5ceb33]

Also known as: Navigator, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1970

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