Seiko Cal. 4478 - 504

The Seiko 4478-504 represents an important milestone in Seiko's 1965 lineup. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c725f6e85232]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1965

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