The Zabrak Powerbank Bluetooth Speaker is your perfect mobile technology companion. This is the ideal device as it combines a powerbank and bluetooth speaker into one. The built-in 4400 mAh Li-ion battery features a power bank for charging portable devices via the USB output port. The built-in NFC Technology allows you to simply connect the speaker to some handsets that are NFC compatible from manufactures like Samsung, Nokia, Sony, and others. The built-in microphone allows you to conference call on-the-go through your smartphone or by video chat programs such as Skype, iChat or Google talk. Includes 3.5mm audio cable and USB to Micro USB recharging cable.Enjoy up to 18hrs. of music at max volume on a single charge.