Seiko Cal. 6638 - 944

The 6638-944 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-50a613fb09fc]

Also known as: Shogun, Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1971

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