Seiko Cal. 4477 - 320

The Seiko 4477-320 represents an important milestone in Seiko's 1972 lineup. It features a White dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-18d4b3268208]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1972

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