Seiko Cal. 4443 - 687

This Spring Drive model from 1988 features a 38mm Hardlex-Coated Steel case. Powered by the 4443 caliber with 33j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-397ea8f177dc]

Also known as: World Timer, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1988

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