Seiko Cal. 4438 - 717

The Seiko 4438-717 represents an important milestone in Seiko's 1974 lineup. Powered by the 4438 caliber with 17j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-a72cea2f4774]

Also known as: UFO, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1974

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