Seiko Cal. 4478 - 237

The Seiko 4478-237 represents an important milestone in Seiko's 1981 lineup. Powered by the 4478 caliber with 31j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-4262d40ce609]

Also known as: Pogue, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1981

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