Universal Wireless Bluetooth Speaker with Built-in Microphone GOMEIR GM007 Wirelessly streams stereo music -Up to 30 feet (10 meters) from any Bluetooth Device such as your smartphone, notebook, or Tablet Speaker has two internal 3W speakers two subwoofer and built-in microphone On this Portable Wireless Bluetooth speaker works for hands-free phone calls Connects via Bluetooth or a 3.5mm stereo cable, built-in Li-Ion rechargeable battery lasts 10-12 hours depending on loudness Main features are: Stereo Bluetooth, Micro SD card slot, Aux Input, works for hands-free phone calls Powerful sound super bass, this speaker could produces a big, warm, crisp sound with clear highs, it is the highest available in this price range