Benefits Works very well with clear audio as a Bluetooth Headphone , Bluetooth Speaker, with SD card can use for stored MP3 Audio / Music, FM radio works very well too, Aux cable can also be used for saving battery, lastly the service warranty of ultraprolink is available for one year which is excellent, since I am a repeat customer and now a fan. Disappointments: Micro-USB charging and no fast charging hence 2.5 hours charging time. Battery life when fully charged at the onset is 8 hours. Performance: Everything works well, though there are shrill bluetooth stutters which are negligible and FM Radio works well in open outdoors.