Tmvel Masti EVO NFC Portable Wireless Bluetooth Speaker for iPhone, iPad - Bluetooth 4.0 Stereo Speaker with Mic Best Stereo Sound: Enjoy crisp, clear audio with impressive volume powered by dual five-watt drivers. Combined 10W output. Bluetooth 4.0: Instant pairing and voice prompts let you easily connect to your smartphone or tablet over a 33-foot distance. It remembers the last device used, so reconnecting is automatic. Built-in microphone on this Portable Wireless Bluetooth Speaker works for hands-free phone calls for Apple iPhone iPad iPod MacBook Samsung Galaxy s4 and s3 Galaxy Note Amazon Kindle Fire HD and all mobile cell phone laptop computer and car. A powerful built-in battery lets you play up to 12 hours at 50% volume on a single charge- that's pretty impressive for a speaker this powerful. NFC Connectivity: Simply tap and start your tunes in seconds with any NFC-enabled device, a feature absent from the vast majority of portable speakers. You can also connect via AUX line-in.