Seiko Cal. 6643 - 157

The 6643-157 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-d4b130dcc8ba]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1966

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