Seiko Cal. 5623 - 678

The Seiko 5623-678 represents an important milestone in Seiko's 1989 lineup. With its 20mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-3571d5c04355]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1989

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