Seiko Cal. 6643 - 911

This Hand-Winding model from 1966 features a 45mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-cad53c68058a]

Also known as: Bullhead, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1966

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