Seiko Cal. 5278 - 406

The Seiko 5278-406 represents an important milestone in Seiko's 1987 lineup. Powered by the 5278 caliber with 28j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-d6680dafbe04]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1987

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