Knox Gear 8 Inch Portable PA System Karaoke Player Large & Sturdy - Great for a backyard party or special event Wireless Microphone Included - Perfect for Karaoke & live performances Wireless Bluetooth - Stream music from a smartphone or tablet Long-Life Rechargeable Battery - Up to 6 hours of life Additional Inputs - Play audio via USB stick, SD card, RCA or Aux Inputs Parties Backyard BBQs Office Functions Speaking Engagements Wireless Streaming via Bluetooth An SD Card Slot for Digital Audio Files A USB Port for Smartphones, Tablets, or Other Storage Devices Analog RCA Inputs for CD Players, Turntables or Stereo Receivers Adjust Bass and Treble Change the Input Source Activate and Deactivate the Wireless Mic Adjust the Speaker&#039;s Equalizer Adjust the Echo Effect