Seiko Cal. 4520 - 739

The 4520-739 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4520 caliber with 27j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-32fee6c091ca]

Also known as: Helmet, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1992

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