Seiko Cal. 4436 - 831

This Hand-Winding model from 1971 features a 40mm Stainless Steel case. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-84b8bf0ca69b]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1971

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