Seiko Cal. 6643 - 430

Released in 1974, the Cal. 6643 with design code 430 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-59aff2bcd4b3]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1974

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