Seiko Cal. 6638 - 190

Released in 1976, the Cal. 6638 with design code 190 was part of Seiko's domestic market collection. It features a Cream dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-18d1fcf1ce8f]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1976

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