Seiko Cal. 4437 - 240

This Spring Drive model from 1983 features a 41mm Two-Tone case. Powered by the 4437 caliber with 30j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-dfe218652389]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1983

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