Seiko Cal. 6643 - 326

The Seiko 6643-326 represents an important milestone in Seiko's 1989 lineup. It features a White dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-b3695a27e4d5]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1989

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