Seiko Cal. 4497 - 591

The 4497-591 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4497 caliber with 36j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-d1bb52ddfa26]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1991

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