Seiko Cal. 5677 - 450

The Seiko 5677-450 represents an important milestone in Seiko's 1979 lineup. Powered by the 5677 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-a976de4fd3c3]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1979

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