Seiko Cal. 6643 - 386

The Seiko 6643-386 represents an important milestone in Seiko's 1987 lineup. It features a Champagne dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-1533ba9b2aa0]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1987

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