Line6 Relay G55, 2.4 GHz Guitar and Bass Wireless Transmitter, 12 Switchable frequencies, Audio frequency range: 10 - 20,000 Hz, Dynamic range: 117 dB, Range: up to 100 m (depending on surroundings), 9.5"" Metal receiver, XLR and jack outputs, Cable tone simulator, 1 x 4-Pin mini XLR input, Battery life: approx. 8 hours, LED chains for audio, battery and RF status display, Operates on 2 x 1.5 V batteries or rechargeable batteries, Guitar cable included, Optional rack mount G55 available separately, not included in purchase