Seiko Cal. 5255 - 643

The 5255-643 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5255 caliber with 31j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-d456ffaacfa1]

Also known as: UFO, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1976

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