Provided is a flash memory device and a method of programming the same. Preferably, a plurality of contiguous enlarged string holes are employed along the sides, tip, and heel or throat bridge of the racquet, in order to reduce the weight of the racquet head. The communication maintenance processor 213 is configured to operate independently of the communication establishment processor 212 and, every time a predetermined transmission period elapses, transmits communication maintaining information for maintaining the establishment of communication with the external device, to the external device. The apparatus further includes a stopper connected to the second body portion and disposed within the first body portion.