Seiko Cal. 6643 - 326

The Seiko 6643-326 represents an important milestone in Seiko's 1980 lineup. Powered by the 6643 caliber with 18j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-449a03381989]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1980

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