Description:Impressive 5W multi-function Bluetooth speaker with built-in wireless charging capability. It will charge most modern devices that are enabled for wireless charging simply by placing them on top of the speaker. Zulu has 4000mAh of power storage and is easily recharged from a USB port or a mains adapter. It has an alarm clock, an FM radio and a microphone for taking phone calls. Music can be played for up to six hours via Bluetooth or an AUX cable. It is presented in a black gift box with an AUX cable, an 80cm Micro-B USB cable and an instruction leaflet. Please note that some phone cases may affect the wireless charging connection. The wireless charger will work at the optimum power level when used with a 5V/2.4A mains adaptor. Using a PC/laptop USB output to power the wireless charger may lead to slow charging, or not charging at all. Other factors like, positioning on the charging surface and the type of case used may also impact wireless charging.