DOSS Cloud Book Wireless Portable Bluetooth 4.0 & Wi-Fi Straming Music speaker,support Pandora,Spotify,iHeart,Tuneln,Multi-room play,Built-in rechargeable battery,handsfree,12 hours play[Color:Black] Powerful sound quality with dual highly total 8W drivers and specialized passive bass radiator.and Rechargeable battery(2200mAh) plays up to 12 hours. Connects directly to your home's Wi-Fi network(2.4GHz Router) for Internet radio, your music library and favorite online music services like Spotify, Pandora, Tuneln and iHeartradio. One-touch access to your music with four personalized presets.You can personalize four presets to your favorite music,radio station,playlists,artists,albums or songs from your music library.You can access your music with a simple touch button on the speaker system at any time. Supports Wireless Music Streaming via New Bluetooth V4.0 Technology,you can also switch to TF card mode and Auxiliary-in mode to listen music resource(without any Wi-Fi network). Powerful control your music with the free Doss Cloud Book app on your smartphone and tablet,instant connection,firmware upgrate(Only support iOS and Android user).