Seiko Cal. 6291 - 507

This Spring Drive model from 1965 features a 45mm Hardlex-Coated Steel case. Powered by the 6291 caliber with 22j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-ef8173116bdd]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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