Seiko Cal. 4544 - 231

The Seiko 4544-231 represents an important milestone in Seiko's 1971 lineup. Powered by the 4544 caliber with 28j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-07fd4ea8b8e9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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