Seiko Cal. 5638 - 247

The Seiko 5638-247 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-318626ead857]

Also known as: Navigator

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

43mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1977

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