Line 6 XD-V70 Digital Wireless Handheld Microphone System 4th-generation digital wireless technology; Exclusive digital technologies surpass analog wireless systems in wireless performance, reliability, simple set up, operation, and sound quality 2.4Ghz broadcast successfully avoids interference caused by TV stations, public safety broadcasts, cell phone towers, and other high-powered sources; License-free for worldwide operation; 12 always-available channels; 100-meter/300-foot range Accurate and precise vocal reproduction with full-range 10 Hz  20 kHz (-2 dB) AF frequency response, wide 115 dB dynamic range (A weighted), superior transient response, and 24-bit digital conversion; 7 accurate microphone models Road-worthy metal transmitter beltpack and receiver chassis; intelligent battery management system; 8 hours of battery life; built-in, loop-through antenna distribution system FCC compliant; License free; Immune to the current FCC Consumer Alert regarding wireless microphones; System includes microphone transmitter with protective storage case, 1/2U receiver with rack ears, antenna front-mount kit, 2x AA batteries 4th-generation digital wireless technology 2.4Ghz broadcast successfully avoids interference caused by TV stations, public safety broadcasts, cell phone towers Accurate and precise vocal reproduction with full-range 10 Hz - 20 kHz (-2 dB) AF frequency response Road-worthy metal transmitter beltpack and receiver chassis; intelligent battery management system FCC compliant; License free; Immune to the current FCC Consumer Alert regarding wireless microphones Exclusive digital technologies surpass analog wireless systems in wireless performance, reliability, simple set up, operation & sound quality Other high-powered sources; License-free for worldwide operation; 12 always-available channels; 100-meter/300-foot range Accurate and precise vocal reproduction with full-range 10 Hz - 20 kHz (-2 dB) AF frequency response, Road-worthy metal transmitter beltpack and receiver chassis; intelligent battery management system; FCC compliant; License free; Immune to the current FCC Consumer Alert antenna front-mount kit, 2x AA batteries 2.4Ghz broadcast successfully avoids interference caused by TV stations, public safety broadcasts. Simple set up, operation, and sound quality Regarding wireless microphones; System includes microphone transmitter with protective storage case, 1/2U receiver with rack ears, Immune to the current FCC Consumer Alert regarding wireless microphones. License-free for worldwide operation; 12 always-available channels; 100-meter/300-foot range 24-bit digital conversion; 7 accurate microphone models 8 hours of battery life; built-in, loop-through antenna distribution system Wide 115 dB dynamic range (A weighted), superior transient response.