Seiko Cal. 4443 - 633

This Spring Drive model from 1972 features a 43mm Hardlex-Coated Steel case. Powered by the 4443 caliber with 34j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-dc8c74b00f88]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1972

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