Seiko Cal. 7173 - 647

The 7173-647 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7173 caliber with 31j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-33cc3abcd516]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1966

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