Seiko Cal. 5691 - 512

The Seiko 5691-512 represents an important milestone in Seiko's 1971 lineup. Powered by the 5691 caliber with 26j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-6590f8174c8b]

Also known as: Bullhead, Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1971

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