Seiko Cal. 4439 - 853

This Spring Drive model from 1970 features a 41mm PVD Black case. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-3b5d1aa01561]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1970

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