Seiko Cal. 6387 - 623

The Seiko 6387-623 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-bb53e4a04471]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1972

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