Seiko Cal. 4438 - 427

The Seiko 4438-427 represents an important milestone in Seiko's 1965 lineup. Powered by the 4438 caliber with 17j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-d3960ad49431]

Also known as: Samurai, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

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