Seiko Cal. 4520 - 387

The Seiko 4520-387 represents an important milestone in Seiko's 1985 lineup. Powered by the 4520 caliber with 35j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-ded8ea5673d3]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1985

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