Seiko Cal. 5687 - 401

The Seiko 5687-401 represents an important milestone in Seiko's 1975 lineup. Powered by the 5687 caliber with 35j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-b7d627f519a7]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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