Seiko Cal. 5691 - 502

The Seiko 5691-502 represents an important milestone in Seiko's 1971 lineup. Powered by the 5691 caliber with 26j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-ca687fc2b524]

Also known as: Helmet, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1971

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