Line6 Relay G10II, 2.4 GHz Plug and Play Wireless System, Audio frequency range: 10 - 20.000 Hz, Automatic frequency selection, Maximum level: 118 dB, Range up to 15 metres (depending on environment), Plug-on transmitter, Table receiver with integrated battery charger, Battery life in operation approx. 7 hours, in standby up to 170 hours, Mute function until signal is present, thus no clicking when plugging in and unplugging, Up to 4 systems can be used in parallel, Worldwide registration and toll-free, Dimensions: 99 x 99 x 66 mm@+@+*Note:* Suitable for instruments with passive or active electronics. No function for guitars with a phase-rotated pin assignment