Seiko Cal. 6636 - 702

The Seiko 6636-702 represents an important milestone in Seiko's 1974 lineup. Powered by the 6636 caliber with 31j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b480506f60f9]

Also known as: Crown, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1974

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