Aura BluNote is a portable wireless speaker system that streams music wirelessly from any A2DP Bluetooth-enabled device within 33'. Listen to your saved music from your Bluetooth-enabled mobile phone, PDA, iPod, MP3/MP4 player, portable game console or computer. Non-Bluetooth devices can connect via an included 3.5mm audio cable. Continue streaming music from your phone while making and receiving phone calls using the PTT Button (Push-to-talk) or use the BluNote to make SKYPE and other VOIP calls. BluNote features Digital Signal Processing (DSP) for noise reduction and echo cancellation during conference calling. The Bass Boost produces a rich, deep, bass tone for a more powerful sound. The Stereo Widening feature creates a three-dimensional sound. Compact, lightweight system provides more than 10 hours of audio on battery power, and includes four AA batteries and an AC adapter.