Seiko Cal. 7031 - 720

Seiko 7031-720

The 7031-720 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-00be19761e5d]

Also known as: Tuna, World Timer

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
11.9mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Champagne
Jewels
20j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1969

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