Alesis MicLink Wireless | Digital Wireless Microphone Adapter with 60-foot Range (2.4GHz, 14 channels) Converts any Lo-Z dynamic mic to a wireless system Rechargeable Lithium Ion-powered XLR transmitter (6+ hour battery life) Reliable 2.4 GHz spectrum; 14 Channels; 60 ft. range Compact receiver with 1/4" out and antenna; powered via battery (AAAx3) or included AC adapter Ideal for all but the largest sound environments: Small to medium stages, karaoke, public speaking, wedding, business presentations, and beyond