Seiko Cal. 7123 - 647

The 7123-647 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7123 caliber with 27j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-258969461946]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1978

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