Seiko Cal. 6687 - 551

The Seiko 6687-551 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-c79b4db2aabc]

Also known as: Turtle, Navigator

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1965

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