Wireless playback from Bluetooth-compatible devices USB-A port for MP3 playback Micro-SD card slot for MP3 playback 3.5 mm audio port for wired use Integrated microphone and controls for calls and music Long-lasting battery with up to 5 hours of music playback This Manhattan LED Bluetooth® Speaker is a wireless speaker that can follow the party no matter where it goes. Bluetooth technology allows it to connect to smartphones, tablets, laptop computers and other devices from up to 10 m (30 feet) away. Its compact size fits easily into a bag or backpack. Whats even better is that it doesnt need to be connected via Bluetooth for you to enjoy your music. Plug a Micro-SD memory card or USB flash drive into the back and use the built-in MP3 player to rock out. Or, you can connect a 3.5mm stereo cable (not included) to the headphone jack of your audio device, then plug the other end into the audio jack on the back of the speaker for wired audio playback. If those cool features werent enoug