Rechargeable battery provides up to 4 hrs. of uptime

Buy at www.musicianscart.com NUX B-7PSM 5.8GHz Wireless In-ear Monitoring System,Rock-solid wireless personal IEM system ready to pair with your favorite pair of in-ears,Receiver sports standard 1/8-inch input, along with an included 1/4-inch adapter,Transmitter and receiver automatically pair when activated, securing you a clear wireless channel,Utilizes the 5.8GHz frequency band for reduced interference,Transmits stereo audio with crystal-clear 24-bit/40kHz clarity,Sports a 100-ft. (line of sight) operating range with sub-5.5ms latency,Rechargeable battery provides up to 4 hrs. of uptime,Power case charges your transmitter and receiver simultaneously via USB-C,Receiver features a clip-on design to comfortably secure to your shirt belt guitar strap and more,System can be scaled up with additional units for large ensembles