Seiko Cal. 6643 - 734

This Kinetic model from 1971 features a 43mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-ab2486ec7acc]

Also known as: Monster, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1971

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