Seiko Cal. 4438 - 251

The Seiko 4438-251 represents an important milestone in Seiko's 1970 lineup. Powered by the 4438 caliber with 33j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-fdb7f8e4ae46]

Also known as: Bullhead, UFO

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1970

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