Seiko Cal. 4481 - 644

The Seiko 4481-644 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-c8928d43d01f]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1971

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