Seiko Cal. 6644 - 644

Released in 1970, the Cal. 6644 with design code 644 was part of Seiko's domestic market collection. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-673dd5bcf087]

Also known as: Goldfeather, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1970

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