Seiko Cal. 7140 - 431

Seiko 7140-431

The 7140-431 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-623f0fa55c12]

Also known as: Tuna, Navigator

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
9.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Silver
Jewels
26j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1966

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