Seiko Cal. 4438 - 348

The Seiko 4438-348 represents an important milestone in Seiko's 1991 lineup. Powered by the 4438 caliber with 19j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-f3694aa629be]

Also known as: Bullhead, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1991

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