Neewer&reg; Black 2.4GHZ Audio Wireless Digital Guitar Transmitter and Receiver with Batteries High-quality tone,sampling rate 48k,16bit. 2.4G uncompress audio transfer. 6 AAA batteries required (trial batteries included, best with Polaroid AAA batteries) The transmission distance is about 30 meters Used in electric guitars and acoustic products Support one to one transmission, 6 grounds transmitter and receiver work at the same time NOTE: Guitar and Amplifier NOT INCLUDED