Seiko Cal. 0720 - 643

Seiko 0720-643

The 0720-643 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-74d167c3327a]

Also known as: Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
14.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
130m
Dial Color
Navy
Jewels
25j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1979

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