Get your message to everyone in your audience with Califone’s Power Pro Powered Companion Speaker. This versatile speaker works as a stand alone wireless PA system or as a wireless companion speaker for your Power Pro PA System. The 90-watt unit lets you increase your volume to accommodate 1000 extra people in your audience. It has a 16-channel UHF wireless mic receiver, as well as an XLR wired microphone input. The “voice priority” switch turns down your music when a presenter is speaking and returns it to the original volume when done. Califone’s Power Pro Powered Companion Speaker also features wheels and a collapsible handle, so it’s a cinch to move around your office. You can even take it outside, since the speaker operates for up to six hours on a single battery charge.