Description:Multi-purpose 3W Bluetooth speaker with a built-in 5W wireless charger. It has a sleek aluminium design with an elevated pad for wireless charging and controls for music playback on the speaker. Alcan will charge devices that are enabled for wireless charging and will work with most modern phones. Simply plug it into any USB port or a mains adapter and place a compatible device on it to charge. The speaker has a 400mAh battery capacity and will play music for 2-3 hours. Alcan is presented in a black gift box with an 80cm Micro-B USB cable and an instruction leaflet. It laser engraves to a natural etch. 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.