Seiko Cal. 7183 - 731

Seiko 7183-731

The 7183-731 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7183 caliber with 27j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-c9e3858a2947]

Also known as: UFO, Navigator

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
15.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Cream
Jewels
27j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1986

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seikata-wm-c9e3858a2947