Seiko Cal. 7145 - 731

Seiko 7145-731

The 7145-731 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-936a22ddea5d]

Also known as: Sumo, Sea Horse

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
14.4mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
80m
Dial Color
Navy
Jewels
24j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1966

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