Seiko Cal. 6644 - 391

The 6644-391 is a sought-after Quartz piece from Seiko's golden era. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-bd65aa5a9395]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1980

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