Portable Bluetooth Speaker, w/ 2x5W Acoustic Drivers, Dual Subwoofer, LED Display, Radio, Alarm Clock, Handsfree Speakerphone, Micro SD Card, USB and AUX-In Slots for Smart Phones, Pad, and Tablet Two quality 5W acoustic drivers, Passive Vibration and Bluetooth 3.0 technology combine to deliver full and natural sound CD Quality Music: With lossless music formats(WAV/FLAC/APE ) supported and the USB/Micro SD card slots, you can enjoy CD quality music in a convenient way Mutiple Playback Options and Inputs: Fully loaded with 6 functions, Wireless Bluetooth, FM Radio, Micro SD card, USB and AUX. Built-in microphone for hands-free speaker phone calling Long Playtime : Built-in Li-Ion 2200mAh rechargeable battery support up to 8hrs of playtime Alarm Clock & Auto Power off: Wake up with bird singing or your favorite song. Sleep timer supports 15-, 30-, 60-,120-minute selections