Product descriptions : Works with iPad iPhone ,smartphones and other devices with any audio player with Micro USB jack Li-ion rechargeable battery for ultimate portability Volume,music and phone controls Work with USB flash and Micro SD Card Flash light LED Play as the FM Radio,can search FM Channel automatically and save them Output power : 12W Play time : up to 5 hours Battery : Li-ion battery 600mAh Charging voltage : DC-5V Wireless transmission range : up to 10m