Seiko Cal. 4437 - 847

This Automatic model from 1977 features a 39mm Two-Tone case. Powered by the 4437 caliber with 29j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-7ce4a72d825d]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1977

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