Seiko Cal. 4448 - 687

Released in 1966, the Cal. 4448 with design code 687 was part of Seiko's domestic market collection. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-1992de294fc1]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1966

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