WESDAR Portable Wireless Stereo Bluetooth Speaker with LED Lights, Compatible with all Bluetooth Devices Bk-040 Bluetooth 3.0 audio wireless connectivity with seamless streaming The device easily connect your phone in second and it is convenient to hand-free with a HD built-in microphone Easy to carry with, universal compatible with any bluetooth enable smart device like smartphones,tablets, MP3, MP4 Water resistant loud speaker and built-in mic for both outdoor and indoor use Powered by built-in rechargeable battery and charged by USB cord included) for long playtime