Seiko Cal. 4437 - 710

This Hand-Winding model from 1966 features a 35mm Stainless Steel case. Powered by the 4437 caliber with 26j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-cd2961f2f186]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1966

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