The Twist wireless speaker and speakerphone includes A2DP Bluetooth for wireless music streaming, a built-in microphone with advanced noise cancellation for crystal clear speakerphone calls, a 50 foot transmission range & a rechargeable Lithium-Ion battery for 5 hours of continuous playtime. Also features 2 speakers and one passive radiator subwoofer. The Twist speaker will also work with any device that has a 3.5mm audio plug such as MP3 players, iPods, iPads, iPhones, Android Phones, Blackberries, and Tablets (including the Kindle Fire).