Seiko Cal. 6171 - 591

The 6171-591 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6171 caliber with 33j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-04d4d4d57718]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1976

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