Seiko Cal. 6639 - 663

Released in 1990, the Cal. 6639 with design code 663 was part of Seiko's domestic market collection. Powered by the 6639 caliber with 17j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-6db039252276]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1990

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