Seiko Cal. 5638 - 710

The 5638-710 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-133aac2dc877]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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