Seiko Cal. 7115 - 647

The 7115-647 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7115 caliber with 20j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-f8a46a60386c]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1983

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