Portable Wireless Bluetooth Speaker by GOgroove - BlueSYNC BX Rechargeable Compact Speaker w/ NFC Tap to Pair, Removable Battery, AUX & USB inputs, Microphone, Playback Controls [Bluetooth, Silver] CRYSTAL CLEAR SOUND  Distinct mids and highs made possible with our large side-firing 50mm precision dual drivers that deliver excellent and loud stereo sound for an incredible compact portable size 3 AUDIO INPUTS  Bluetooth, 3.5mm AUX, and a USB port let you connect almost any media device like the iPhone, iPad, iPod, Android phones, tablets, and USB flash drives loaded with MP3 audio files NFC "TAP TO PAIR"  Bluetooth pairing made easy to quickly stream music or Internet radio services like Spotify & Pandora; perfect for home, dorm, kitchen, bathroom, office, beach, game nights ULTRA PORTABLE  Weighs under 1.5lb and measures just 5 x 4.5 x 4 in, but we didn't sacrifice power when we implemented a rechargeable & removable 3.7V 1050mAh Li-ion battery for 4-6hrs of playback Tech Specs  3 Year Manufacturer Warranty | Driver: 50mm Full-range | Speaker Power: 3Wx2; 12W Peak | Audio Input: Bluetooth, 3.5mm AUX, USB | Playback time: 4-6 hrs |Phone calls: Yes, integrated mic <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 music files and turn the BX 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. BlueSYNC BX 3.5mm AUX cable USB charging cable Rechargeable battery (3.7V, 1050mAh Li-ion)