Seiko Cal. 4437 - 437

This Automatic model from 1991 features a 40mm Gold-Plated case. Powered by the 4437 caliber with 21j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-be1b7461f147]

Also known as: Sportsmatic, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1991

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