Seiko Cal. 6643 - 234

This Hand-Winding model from 1966 features a 34mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-f05dca3b09f3]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1966

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