Seiko Cal. 4549 - 569

This Spring Drive model from 1977 features a 43mm Hardlex-Coated Steel case. It features a Silver dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-365dcdb4a651]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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