Seiko Cal. 5645 - 878

This Quartz model from 1980 features a 42mm Gold-Plated case. Powered by the 5645 caliber with 28j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-78e2c1893bf2]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1980

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