For audiences up to 3,250 and Room size up to 26,000 Sq. ft. Built-in UHF 16 channel wireless receiver (584 MHz - 608 MHz). Choice of wireless mic: lapel & headset, flesh tone over-ear, or handheld microphone. 150 watt multimedia stereo amplifier. Built-in 21"electret condenser gooseneck mic picks up your voice from up to 20"away. Integrated control panel with microphone volume, auxiliary, bass and treble controls. Power On/Off switch. 2 external speaker jacks 1/4"connectors. Line in 1/4"connector, Line out 1/4"connector, XLR mic input for 2nd mic, Equipment Bay with locking doors, Center divider and left-side shelf. 4 Hidden Casters. Solid hardwood. What's in the Box: SW3035 Ambassador Lectern, 150 watt built-in amplifier with wireless receiver, Choice of wireless mic: lapel & headset, flesh tone over-ear, or handheld microphone, Bluetooth module, 4 Built-in Jensen design speakers, 21"electret condenser gooseneck mic, 10' AC power cord