Seiko Cal. 4540 - 606

The Seiko 4540-606 represents an important milestone in Seiko's 1978 lineup. Powered by the 4540 caliber with 26j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-e7046a1cad1c]

Also known as: Helmet, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1978

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