Sunshot Portable Super Bass Resonance Bluetooth Wireless Speaker With Power Bank Bluetooth Compatible Portable Perfect Outdoor Sport/ Support TF Card / Built-in Mic / 3.5 mm Audio Jack New 2 in 1 function. High capacity built-in 4400 mAh polymer lithium battery can charge your phone simultaneously,The portability is endless and easy to take to anywhere. Good for outdoor sport. Full,High-Def Sound - Enjoy an impressively crystal clear sound quality and robust bass realized through a 3W audio driver and passive subwoofer. Built-in noise reduction microphone for hands-free speakerphone use. You can choose to play your music through your Smartphone by connecting the Bluetooth, or insert TF card/ Micro SD card in the card slot to choose the TF Card Mode. Works with Virtually any Bluetooth-Enabled Device (Smartphones, Tablets, PCs, MP3 Players, etc.)