FeaturesConnectivity: Bluetooth Built-in 10 hour rechargeable batteryBuilt-in standard speaker adapter2x 4.5\" woofers & 1x 3.5\" Piezo DriverHigh and low EQ per channelOffering 40 watts of output power in a portable form factor, the PW40BATBT Powerwerks 40W Wireless Bluetooth Portable PA System can be operated both plugged into an AC power source or operated off of its internal rechargeable battery (for up to 10 hours). Thanks to its integrated Bluetooth 3.0 module, it allows you to stream audio directly from your compatible devices, such as smartphones or tablets, within a 33-foot range. In addition to Bluetooth, the PW40BATBT features 2 wired channels, an auxiliary 1/8\" input and an XLR microphone input, each with independent volume control and 2-band EQ. The PowerLink Circuit allows you to link 2 or more units together, allowing for streamlined expandability.