Seiko Cal. 6644 - 475

Released in 1968, the Cal. 6644 with design code 475 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-30fe32c75401]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1968

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