Seiko Cal. 4443 - 131

The Seiko 4443-131 represents an important milestone in Seiko's 1966 lineup. Powered by the 4443 caliber with 25j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-daccf2ae6164]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1966

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