| 摘要 |
Provided is a practice golf club having a centrifugal weight, a signal generating portion, and a lighting emitting diode, thereby enabling a user to exercise a swing operation regardless of a place. A practice golf club includes a shaft equipped with a grip, a golf ball having a golf ball body(21), a support(25) for supporting the golf ball body to the shaft, and a sleeve(27) mounted on an inner portion of the golf ball body to form the same axis of the shaft, a centrifugal weight(30) reciprocating along the sleeve and having a magnet(33) generating a magnetic field, a signal generating portion(50) generating an access signal by magnetically operating the magnet of the centrifugal weight, and a lighting emitting diode installed on the surface of the golf ball body. |
