Seiko Cal. 6691 - 708

The Seiko 6691-708 represents an important milestone in Seiko's 1966 lineup. Powered by the 6691 caliber with 31j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-d4922e8a9acd]

Also known as: Bullhead, Rally

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1966

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