Seiko Cal. 4477 - 230

Released in 1974, the Cal. 4477 with design code 230 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-654ca49cdf2f]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1974

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