Seiko Cal. 6640 - 733

This Hand-Winding model from 1965 features a 43mm Hardlex-Coated Steel case. It features a Cream dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-62e63343791c]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1965

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