Seiko Cal. 4481 - 138

The Seiko 4481-138 represents an important milestone in Seiko's 1967 lineup. Powered by the 4481 caliber with 24j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c9e8aa64638f]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1967

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