Shure P3RA PSM 300 L19, UHF in-ear receiver, Frequency range: L19 (630 - 654 MHz), Personal mix control, MixMode function, Wide stereo separation, 3.5mm Stereo jack output, Black metal case, Operation with 2x AA batteries up to 5.5h or optional SB900 battery up to 7h, Weight: 415g