Seiko Cal. 6644 - 400

The 6644-400 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-5625c8ffd3ee]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1965

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