Seiko Cal. 5231 - 317

The 5231-317 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5231 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-8b78d0c5a903]

Also known as: Rally, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

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