Seiko Cal. 5687 - 496

The Seiko 5687-496 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-2aaf636057d0]

Also known as: Helmet, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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