Seiko Cal. 6643 - 236

Released in 1984, the Cal. 6643 with design code 236 was part of Seiko's domestic market collection. Powered by the 6643 caliber with 26j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-16d8edb395be]

Also known as: Turtle, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1984

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