Seiko Cal. 6643 - 255

This Kinetic model from 1971 features a 46mm PVD Black case. Powered by the 6643 caliber with 24j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-8a201b77f539]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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