Bluetooth Speaker, Sardine SDY-021 Big Power Portable Wireless Bluetooth Speaker 10W Stereo Audio Sound with Microphone Broadcast Caller Support Radio FM/TF Card/U Disk Handfree Speakerphone (Black + Blue)

This unit is not actually stereo ! Where the left speaker should be they have put a flat passive radiator, so therefore you cannot have stereo or surround sound ! You really notice it when you know a tune and only get half of the sound ! The bass is superb for the size of the woofer .