Stylish 3W Bluetooth speaker with built-in wireless charging capability. It will charge devices that are enabled for wireless charging simply by placing them on the non-slip pad and will work with most modern phones. Sontar has 4000mAh of power storage and is easily recharged from a USB port or a mains adapter. It will play music for up to 20 hours and has a microphone for phone calls. The speaker is presented in a black gift box with an instruction leaflet and an 80cm Micro-B USB cable. 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.