Seiko Cal. 4549 - 390

The Seiko 4549-390 represents an important milestone in Seiko's 1971 lineup. Powered by the 4549 caliber with 25j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-293e58295324]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

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