Bluetooth Speaker Ultra-Portable Lightweight Wireless Sound with Built in Rechargeable Battery for 5 hour of Playtime: Black Rhino (White) Compact, ultra-portable and light weight which allows you to listen your music or answer your phone call with the built in micro phone any where Built-in rechargeable battery for up to 5 hours of playback time Bluetooth v2.1 Technology enables you to connect wirelessly to your devices up to 30 feet away Ease of connection: either by Bluetooth or the 3.5mm line-in audio jack through your USB input port (used the supplied cable) Support FM radio playing and MP3 music playing from your Micro SD card through the TF slot