iFrogz Audio TempoBlast Wireless Bluetooth Speaker - Blue Wireless: The Tempo Blast connects wirelessly via Bluetooth and offers a 30-foot reception range. Portable: Small and water- and dust-resistant, the Tempo Blast brings a party everywhere it goes. Powerful: Its 36mm speaker delivers rich, room-filling sound. Clever: A built-in microphone allows you to take calls hands-free. So Easy: The Tempo Blast is compatible with 3.5mm AUX cables, includes a micro-USB charging cable, and offers an eyehole thats perfect for a carrying strap.