Seiko Cal. 0731 - 140

Seiko 0731-140

The 0731-140 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0731 caliber with 28j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-66af5a5586e4]

Also known as: Navigator, Emperor

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
10.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
28j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1973

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