Seiko Cal. 4518 - 677

The Seiko 4518-677 represents an important milestone in Seiko's 1971 lineup. Powered by the 4518 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-aee847c91b94]

Also known as: Monster, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

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