Seiko Cal. 4448 - 641

This Spring Drive model from 1989 features a 44mm Hardlex-Coated Steel case. Powered by the 4448 caliber with 17j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-8dfbf8570f4e]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1989

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