NYNE Bass Portable Bluetooth Speaker with Built-in Active Subwoofer, USB Charging and Hands free Microphone (Black/Silver) Superior 2.1 Sound Quality with a Built-in Active Subwoofer Bluetooth 4.0 Wireless Music Streaming with NFC Easy Pairing Built in Microphone for Hands free Calling Built-in USB Charging, Built-in Concealed Carry Handle Rechargeable Battery with 10 Hour Playtime Includes 3.5mm Cable and AC Adapter with 4 Worldwide Plugs 3 Year Platinum Dealer Warranty.Refer application guide for troubleshooting steps