Seiko Cal. 6677 - 557

This Quartz model from 1965 features a 42mm Hardlex-Coated Steel case. Powered by the 6677 caliber with 36j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-7bd9008ce702]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1965

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