Impressive Sound QualityThe Zoook Bluetooth Speaker ZB-BS100 (Black) delivers a high quality audio letting you make the most of your music and tunes across all sound frequencies between 60Hz-20KHz. This means both the high peaks as well as the deep bass in whatever you playback sound great ensuring your musical entertainment.Bluetooth ConnectivityYou can easily sync your Bluetooth-compatible devices like smartphone, tablet, notebook, desktop, MP3 player and more with this ZB-BS100 Bluetooth Speaker. Also, you can enjoy hands-free phone calling over this Bluetooth connectivity using your smartphone or tablet. The up to 10 m wireless range supported by the ZB-BS100 Bluetooth Speaker allows you a long connection no matter you freely roam around with your devices never losing out on the signals.Stylish Design, Powerful BatteryThe round shape of this Air Drum Bluetooth Speaker has a silver disc on top and at the bottom that enhance its elegant look. This ZB-BS100 Bluetooth Speaker comes built-in with a sturdy lithium-ion 3.7V 1000 mAh battery that provides you with long 4 hours playtime. You would have to look for a separate charging cable as the Bluetooth Speaker comes with a USB to mini-USB cable for charging this 1000 mAh battery. You should just connect the micro USB to this Bluetooth Speaker and the USB to your wall adapter, PC, or ZOOOOK Power Vault. Get to know the exact remaining battery status with the external LED indicators that can help you charge your Speaker in time to go non-stop with your music enjoyment.Easy to OperateSimply hit the on/off switch located on the ZB-BS100 Bluetooth Speaker's bottom to activate or deactivate it. The external controls like play, pause, rewind, forward, volume and call buttons enable multiple functionalities with your music and phone calling keeping you close to your soundtracks and people whenever you want.