Seiko Cal. 4477 - 193

The Seiko 4477-193 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-b83b991dde1c]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1971

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