GOgroove Portable Bluetooth Rechargeable Speaker with NFC Pairing & Powerful Front Drivers - Works With Smartphones , Tablets , MP3 Players , Laptops and More Bluetooth-Enabled Devices UNIVERSAL CONNECTIVITY: Connect and play quality room filling sound via Bluetooth with NFC Tap-to-Pair, 3.5mm AUX input, or USB port RETRO BOOMBOX DESIGN demands attention and harkens back to a simpler time, but without the cassettes and old tech. Faux leather exterior gives it a premium feel and look DUAL STEREO FRONT FIRING DRIVERS deliver improved sound quality for impressive, full-range, room filling audio playback USB RECHARGEABLE BATTERY lasts 6 hours and charges in less than 2.5 hours. Battery is removable making it easy to keep the party going by replacing the battery, eliminating the wait time on recharging 3 YEAR WARRANTY: Backed by our 3 Year Manufacturer's Warranty || Please visit www.GOgroove.com or give us a call to purchase extra batteries <span class="a-text-bold"><u>Bluetooth + NFC</u></span>: &#034;Tap-to-Pair&#034; makes Bluetooth pairing easy so you can wirelessly stream music and Internet radio services like Spotify &amp; Pandora from your phone or tablet <span class="a-text-bold"><u>AUX Port</u></span>: Use the included 3.5mm AUX cable to play audio from your smartphone, tablet, or other devices with a built-in headphone port <span class="a-text-bold"><u>USB Flash Drive</u></span>: Connect a USB thumb drive loaded with MP3 music files and turn the BXL speaker into an MP3 player that has on-board buttons to control media playback <span class="a-text-bold"><u>What is NFC?</u></span> NFC (Near-field communication) technology streamlines the Bluetooth pairing process with an easy &#034;tap-to-pair&#034; physical contact motion to &#034;introduce&#034; your device with the speaker. <span class="a-text-bold">File Type Compatibility</span>: Make sure your music tracks are .mp3 audio files. <span class="a-text-bold">File Folder Structure</span>: Move the .mp3 audio tracks out of any folders and sub-folders and have them loose and all together (i.e. not inside a folder). <span class="a-text-bold">Flash Media Formatting</span>: As is almost universal with USB flash drives, keep the storage system as FAT32. BlueSYNC BXL 3.5mm AUX cable USB charging cable Rechargeable battery (3.7V, 1050mAh Li-ion)