Seiko Cal. 6636 - 961

The 6636-961 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6636 caliber with 29j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-3b9d2801897d]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1987

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