Seiko Cal. 4448 - 154

This Spring Drive model from 1978 features a 45mm Stainless Steel case. With its 19mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-7ebb89e73b27]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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