Seiko Cal. 6644 - 740

The 6644-740 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-eebe565179ef]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1990

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